This document is a standardized test for chemistry taken by students in Form 4 at a Malaysian secondary school. It consists of 3 sections - Section A with 20 objective questions, Section B with 3 subjective questions, and Section C with 1 essay question. The test covers topics in chemistry including chemical equations, properties of substances, polymers, electrolysis, electrochemistry and industrial processes. It provides instructions for students on the format and time limit for the test.
This document contains a Sulit (confidential) topical test on electrochemistry. It consists of multiple choice questions testing understanding of concepts such as electrolytes, electrolysis of molten compounds, and electroplating. The questions provide diagrams of apparatus set ups and ask students to identify processes, reactions, and products of electrolysis experiments.
This document contains a chemistry test with three parts:
Part A contains 10 multiple choice questions about chemistry concepts like the periodic table, electron configuration, and chemical reactions.
Part B contains multi-part questions about specific elements and compounds. It asks students to identify elements on the periodic table, draw electron configurations, and describe chemical reactions and electrolysis.
Part C contains experimental questions about electrolysis using different apparatus set ups and solutions. It requires identifying electrodes and ions, writing chemical equations, and describing observations at the electrodes.
The test is designed to evaluate students' understanding of fundamental chemistry concepts and their ability to apply that knowledge to analyze experiments and unknowns. It provides context clues and diagrams to help students
Marking scheme-chemistry-perfect-score-module-form-4-set-3Mudzaffar Shah
The document provides information on three electrolysis experiments involving different electrolytes and products observed at the anode and cathode. Experiment 1 uses sodium chloride solution, with chlorine gas produced at the anode and hydrogen gas at the cathode. Experiment 2 uses hydrochloric acid, producing oxygen gas at the anode and hydrogen gas at the cathode. Experiment 3 uses copper sulfate solution, with no ions being discharged and copper metal being deposited at the cathode through the oxidation of copper electrodes.
This document contains a 38-question multiple choice exam on chemistry concepts. The questions cover topics like atomic structure, chemical equations, acid-base reactions, oxidation-reduction, organic compounds, and the periodic table. Sample questions identify the atomic symbol for chlorine based on its properties, determine the products of a reaction between an acid and base, and calculate the mass of a substance produced in a chemical reaction.
This document contains a 50 question chemistry exam for the Hong Kong Certificate of Education Examination in 2002. The exam covers topics such as atomic structure, chemical reactions, acids and bases, organic compounds, and industrial processes. Students are instructed to choose the best answer for each multiple choice question and to mark their answers on the provided answer sheet.
The document is the chemistry paper for the 2000 Hong Kong Certificate of Education Examination. It contains 35 multiple choice questions related to chemistry concepts. The questions cover topics such as the electronic structures of compounds, properties of elements on the periodic table, chemical reactions, stoichiometry, gas laws, and electrochemistry.
1. The document is a past year SPM examination paper containing 26 multiple choice questions testing concepts in chemistry.
2. The questions cover topics like states of matter, acid-base reactions, electrolysis, crystal structures, chemical equations, atomic structure, bonding and electroplating.
3. Multiple choice options are provided for each question to test understanding of fundamental chemistry concepts.
This document is a chemistry exam question paper focusing on electricity and chemistry. It contains 44 multiple choice questions testing understanding of key concepts such as:
- Substances used in electrical cables and why
- Products of electrolysis of various solutions and molten salts
- Electroplating and electrorefining processes
- Use of electrolysis in industrial processes like metal extraction
This document contains a Sulit (confidential) topical test on electrochemistry. It consists of multiple choice questions testing understanding of concepts such as electrolytes, electrolysis of molten compounds, and electroplating. The questions provide diagrams of apparatus set ups and ask students to identify processes, reactions, and products of electrolysis experiments.
This document contains a chemistry test with three parts:
Part A contains 10 multiple choice questions about chemistry concepts like the periodic table, electron configuration, and chemical reactions.
Part B contains multi-part questions about specific elements and compounds. It asks students to identify elements on the periodic table, draw electron configurations, and describe chemical reactions and electrolysis.
Part C contains experimental questions about electrolysis using different apparatus set ups and solutions. It requires identifying electrodes and ions, writing chemical equations, and describing observations at the electrodes.
The test is designed to evaluate students' understanding of fundamental chemistry concepts and their ability to apply that knowledge to analyze experiments and unknowns. It provides context clues and diagrams to help students
Marking scheme-chemistry-perfect-score-module-form-4-set-3Mudzaffar Shah
The document provides information on three electrolysis experiments involving different electrolytes and products observed at the anode and cathode. Experiment 1 uses sodium chloride solution, with chlorine gas produced at the anode and hydrogen gas at the cathode. Experiment 2 uses hydrochloric acid, producing oxygen gas at the anode and hydrogen gas at the cathode. Experiment 3 uses copper sulfate solution, with no ions being discharged and copper metal being deposited at the cathode through the oxidation of copper electrodes.
This document contains a 38-question multiple choice exam on chemistry concepts. The questions cover topics like atomic structure, chemical equations, acid-base reactions, oxidation-reduction, organic compounds, and the periodic table. Sample questions identify the atomic symbol for chlorine based on its properties, determine the products of a reaction between an acid and base, and calculate the mass of a substance produced in a chemical reaction.
This document contains a 50 question chemistry exam for the Hong Kong Certificate of Education Examination in 2002. The exam covers topics such as atomic structure, chemical reactions, acids and bases, organic compounds, and industrial processes. Students are instructed to choose the best answer for each multiple choice question and to mark their answers on the provided answer sheet.
The document is the chemistry paper for the 2000 Hong Kong Certificate of Education Examination. It contains 35 multiple choice questions related to chemistry concepts. The questions cover topics such as the electronic structures of compounds, properties of elements on the periodic table, chemical reactions, stoichiometry, gas laws, and electrochemistry.
1. The document is a past year SPM examination paper containing 26 multiple choice questions testing concepts in chemistry.
2. The questions cover topics like states of matter, acid-base reactions, electrolysis, crystal structures, chemical equations, atomic structure, bonding and electroplating.
3. Multiple choice options are provided for each question to test understanding of fundamental chemistry concepts.
This document is a chemistry exam question paper focusing on electricity and chemistry. It contains 44 multiple choice questions testing understanding of key concepts such as:
- Substances used in electrical cables and why
- Products of electrolysis of various solutions and molten salts
- Electroplating and electrorefining processes
- Use of electrolysis in industrial processes like metal extraction
This document contains a chemistry exam paper with questions about electrolysis and electricity. There are 30 multiple choice questions testing understanding of key concepts such as: products formed during the electrolysis of different substances like acids, salts and molten compounds; which electrodes specific elements are formed at; and why certain materials like copper, plastic and steel are used in electrical cables and circuits. The questions cover topics including electroplating, electrolysis of aqueous and molten solutions, and electrical safety.
1. The document contains 20 multiple choice questions about chemistry concepts such as particles, states of matter, chemical reactions, rates of reaction, food additives, and acids and bases.
2. The questions cover topics like the types of particles that make up different substances, using carbon-14 to estimate the age of artifacts, interpreting temperature-time graphs, identifying reactants and products in chemical equations, factors that affect reaction rates, functions of food additives, and using bases to relieve acid indigestion.
3. Several questions also involve identifying the correct matches between concepts like transition metal catalysts and their industrial uses, common alloys and their main components, and calculating percentages of elements in compounds.
The document provides a chemistry exam paper from 2004 containing 40 multiple choice questions testing various concepts in chemistry. The questions cover topics such as photon mass, quantum numbers, bond orders, molecular orbitals, acidity trends, coordination complexes stability, hydrogenation reactions, isomerism, hybridization, electrode potentials, nuclear reactions, organic naming/structure, polymers, DNA, dyes, and pharmaceutical drugs.
1. The document discusses factors that affect electrolysis and applications of electrolysis such as electroplating, purification, and extracting reactive metals.
2. It also discusses how electrochemistry concepts are based on tendencies of metals to release electrons and displace other metals from salt solutions through displacement reactions.
3. Two electrochemical cells, P and Q, are compared and contrasted. Cell P involves copper electrodes in copper sulfate and undergoes a chemical to electrical conversion, while Cell Q involves copper and lead electrodes and undergoes an electrical to chemical conversion.
This document contains an unsolved chemistry paper from 1996 containing 50 multiple choice questions. The questions cover a wide range of chemistry topics including properties of elements, chemical reactions, stoichiometry, acid-base reactions, and organic chemistry. No answers are provided for the questions.
Structure & essay Questions (chemical bond)Mudzaffar Shah
Table 1 shows the proton numbers of elements P, Q, and R.
(1) P, Q, and R form ionic bonds when combined. PQ2 and R2Q have different properties - PQ2 has low melting/boiling points and is volatile, while R2Q has high melting/boiling points and can conduct electricity when molten.
(2) Table 2 shows elements W, Y, and Z. W and Z can form an ionic compound by W donating an electron to form W+ and Z accepting to form Z-. Y and Z form a covalent compound by Y sharing 4 electrons to form 4 single covalent bonds with 4 Z atoms.
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The document discusses electrochemistry and electrolysis. It defines electrolytes and non-electrolytes, and explains how electrolytes can conduct electricity in molten or aqueous states through the movement of ions. Examples are given of electrolysis processes and how electrolysis can be used for metal extraction, purification, and electroplating.
This document provides an overview of different types of bonds including ionic, covalent, and metallic bonds. It discusses how ions form from the gain or loss of electrons. It also covers topics such as binary acids, polyatomic ions, electronegativity and its relation to acid strength. Lewis dot structures are shown for example compounds. Properties of ionic, molecular, and metallic compounds are summarized in a table. Formulas and names are provided for various compounds involving metals, nonmetals, and acids. Key vocabulary terms are defined at the end.
This document contains a chemistry exam from 2007 with 40 multiple choice questions covering various topics:
1. Electrochemistry questions involving standard reduction potentials.
2. Equilibrium constants for reaction of N2 and O2.
3. Radioactive decay and half-life calculations.
4. Organic chemistry reactions like Friedel-Crafts acylation.
5. Properties of acids and bases.
6. Characteristics of polymers, transition metals, and coordination compounds.
7. Stoichiometry, gas laws, thermochemistry, and other general chemistry principles.
This document contains an unsolved chemistry paper from 2008 with 40 multiple choice questions testing concepts related to organic chemistry, inorganic chemistry, and physical chemistry. The questions cover topics such as reaction mechanisms, properties of compounds, oxidation states, naming of compounds, and stoichiometry.
This document contains a 25 question multiple choice test on the structure of the atom. The questions cover topics like the differences between atoms and ions, kinetic theory, states of matter, phase changes, atomic structure, isotopes, and the number of protons, neutrons and electrons in atoms.
The document provides the electronic configurations of various ions of transition metals and lanthanides. It also provides answers to questions related to oxidation states, stability, and properties of transition metal ions and compounds. The key points are:
1) Electronic configurations of ions such as Cr3+, Cu+, Co2+, Mn2+, Pm3+, Ce4+, Lu2+, and Th4+ are given.
2) Mn2+ compounds are more stable than Fe2+ towards oxidation due to the half filled d orbital of Mn2+, making it more stable.
3) Oxidation states of transition metals increase from +2 to higher states with an increase in atomic number due to increasing number of d electrons
1. The document provides 30 multiple choice questions related to chemistry.
2. The questions cover topics such as bond energies, organic reactions, IUPAC names, properties of gases, acid-base chemistry, and more.
3. Multiple choice options with a single correct answer are provided for each question.
This document contains an unsolved chemistry paper from 2000 containing 50 multiple choice questions testing concepts such as:
1) Properties and reactions of acids, bases, salts, and other chemicals
2) Gas laws, thermodynamics, equilibrium, and stoichiometry
3) Structure and bonding in organic and inorganic compounds
4) Characteristics and trends in the periodic table
5) Techniques for separating and purifying compounds
The questions cover a wide range of fundamental chemistry topics and are intended to evaluate students' understanding of core concepts through multiple choice responses.
1. The document is a chemistry exam paper from the Malaysian Ministry of Education for the Malaysian Certificate of Education (SPM) examination.
2. It contains 31 pages and covers various chemistry concepts tested over 1 hour and 15 minutes.
3. The questions are presented bilingually in English and Malay and cover topics such as atoms, molecules, chemical equations, acids and bases, the periodic table and organic chemistry.
This document contains a 45 question chemistry exam from 1994 with multiple choice answers for each question. The questions cover a wide range of chemistry topics including organic chemistry reactions, properties of acids and bases, transition metals, thermodynamics, kinetics, and other general chemistry concepts.
This document contains a 30 question multiple choice quiz on inorganic chemistry topics including crystal field theory, coordination complexes, organometallic chemistry, and acid-base chemistry in non-aqueous solvents. The questions cover topics such as ligand properties, d-orbital splitting, reaction mechanisms, electronic configurations, and biological roles of metal ions. An answer key is provided at the end with the correct response for each question lettered a-d.
This document provides an unsolved chemistry exam from 1998 containing 66 multiple choice questions testing various chemistry concepts. The questions cover topics such as oxidation states, IUPAC naming, isomerism, acid-base reactions, equilibrium, electrochemistry, and organic chemistry reactions.
The document is a 15 question post-test on electrochemistry. It contains multiple choice questions testing understanding of electrolysis apparatus, electrolytes, half-reactions, and products of electrolysis for various molten salts including sodium chloride, lead(II) bromide, and potassium iodide. Diagrams of electrolysis set-ups are provided with some questions referring to labeled components or substances.
Ba
137
Strontium
38
Rb
Rubidium
44
Sr
88
Potassium
19
K
39
Magnesium
12
Mg
24
Calcium
20
Ca
40
This document consists of (1) a chemistry exam with multiple choice questions testing knowledge of concepts such as electrolysis, chemical reactions, and the periodic table and (2) a periodic table. The exam tests understanding of fundamental chemistry concepts through 40 multiple choice questions.
This document contains a chemistry exam paper with questions about electrolysis and electricity. There are 30 multiple choice questions testing understanding of key concepts such as: products formed during the electrolysis of different substances like acids, salts and molten compounds; which electrodes specific elements are formed at; and why certain materials like copper, plastic and steel are used in electrical cables and circuits. The questions cover topics including electroplating, electrolysis of aqueous and molten solutions, and electrical safety.
1. The document contains 20 multiple choice questions about chemistry concepts such as particles, states of matter, chemical reactions, rates of reaction, food additives, and acids and bases.
2. The questions cover topics like the types of particles that make up different substances, using carbon-14 to estimate the age of artifacts, interpreting temperature-time graphs, identifying reactants and products in chemical equations, factors that affect reaction rates, functions of food additives, and using bases to relieve acid indigestion.
3. Several questions also involve identifying the correct matches between concepts like transition metal catalysts and their industrial uses, common alloys and their main components, and calculating percentages of elements in compounds.
The document provides a chemistry exam paper from 2004 containing 40 multiple choice questions testing various concepts in chemistry. The questions cover topics such as photon mass, quantum numbers, bond orders, molecular orbitals, acidity trends, coordination complexes stability, hydrogenation reactions, isomerism, hybridization, electrode potentials, nuclear reactions, organic naming/structure, polymers, DNA, dyes, and pharmaceutical drugs.
1. The document discusses factors that affect electrolysis and applications of electrolysis such as electroplating, purification, and extracting reactive metals.
2. It also discusses how electrochemistry concepts are based on tendencies of metals to release electrons and displace other metals from salt solutions through displacement reactions.
3. Two electrochemical cells, P and Q, are compared and contrasted. Cell P involves copper electrodes in copper sulfate and undergoes a chemical to electrical conversion, while Cell Q involves copper and lead electrodes and undergoes an electrical to chemical conversion.
This document contains an unsolved chemistry paper from 1996 containing 50 multiple choice questions. The questions cover a wide range of chemistry topics including properties of elements, chemical reactions, stoichiometry, acid-base reactions, and organic chemistry. No answers are provided for the questions.
Structure & essay Questions (chemical bond)Mudzaffar Shah
Table 1 shows the proton numbers of elements P, Q, and R.
(1) P, Q, and R form ionic bonds when combined. PQ2 and R2Q have different properties - PQ2 has low melting/boiling points and is volatile, while R2Q has high melting/boiling points and can conduct electricity when molten.
(2) Table 2 shows elements W, Y, and Z. W and Z can form an ionic compound by W donating an electron to form W+ and Z accepting to form Z-. Y and Z form a covalent compound by Y sharing 4 electrons to form 4 single covalent bonds with 4 Z atoms.
Prepare for the IITJEE with past papers solved by the coaching experts at Sri Chaitanya Junior College. Set your sights on the IITJEE 2014 Entrance examinations. To know more - visit www.srichaitanya.net or call 040 66060606. You can also stay in touch with us at www.facebook.com/SriChaitanyaEducationalInstitutes
The document discusses electrochemistry and electrolysis. It defines electrolytes and non-electrolytes, and explains how electrolytes can conduct electricity in molten or aqueous states through the movement of ions. Examples are given of electrolysis processes and how electrolysis can be used for metal extraction, purification, and electroplating.
This document provides an overview of different types of bonds including ionic, covalent, and metallic bonds. It discusses how ions form from the gain or loss of electrons. It also covers topics such as binary acids, polyatomic ions, electronegativity and its relation to acid strength. Lewis dot structures are shown for example compounds. Properties of ionic, molecular, and metallic compounds are summarized in a table. Formulas and names are provided for various compounds involving metals, nonmetals, and acids. Key vocabulary terms are defined at the end.
This document contains a chemistry exam from 2007 with 40 multiple choice questions covering various topics:
1. Electrochemistry questions involving standard reduction potentials.
2. Equilibrium constants for reaction of N2 and O2.
3. Radioactive decay and half-life calculations.
4. Organic chemistry reactions like Friedel-Crafts acylation.
5. Properties of acids and bases.
6. Characteristics of polymers, transition metals, and coordination compounds.
7. Stoichiometry, gas laws, thermochemistry, and other general chemistry principles.
This document contains an unsolved chemistry paper from 2008 with 40 multiple choice questions testing concepts related to organic chemistry, inorganic chemistry, and physical chemistry. The questions cover topics such as reaction mechanisms, properties of compounds, oxidation states, naming of compounds, and stoichiometry.
This document contains a 25 question multiple choice test on the structure of the atom. The questions cover topics like the differences between atoms and ions, kinetic theory, states of matter, phase changes, atomic structure, isotopes, and the number of protons, neutrons and electrons in atoms.
The document provides the electronic configurations of various ions of transition metals and lanthanides. It also provides answers to questions related to oxidation states, stability, and properties of transition metal ions and compounds. The key points are:
1) Electronic configurations of ions such as Cr3+, Cu+, Co2+, Mn2+, Pm3+, Ce4+, Lu2+, and Th4+ are given.
2) Mn2+ compounds are more stable than Fe2+ towards oxidation due to the half filled d orbital of Mn2+, making it more stable.
3) Oxidation states of transition metals increase from +2 to higher states with an increase in atomic number due to increasing number of d electrons
1. The document provides 30 multiple choice questions related to chemistry.
2. The questions cover topics such as bond energies, organic reactions, IUPAC names, properties of gases, acid-base chemistry, and more.
3. Multiple choice options with a single correct answer are provided for each question.
This document contains an unsolved chemistry paper from 2000 containing 50 multiple choice questions testing concepts such as:
1) Properties and reactions of acids, bases, salts, and other chemicals
2) Gas laws, thermodynamics, equilibrium, and stoichiometry
3) Structure and bonding in organic and inorganic compounds
4) Characteristics and trends in the periodic table
5) Techniques for separating and purifying compounds
The questions cover a wide range of fundamental chemistry topics and are intended to evaluate students' understanding of core concepts through multiple choice responses.
1. The document is a chemistry exam paper from the Malaysian Ministry of Education for the Malaysian Certificate of Education (SPM) examination.
2. It contains 31 pages and covers various chemistry concepts tested over 1 hour and 15 minutes.
3. The questions are presented bilingually in English and Malay and cover topics such as atoms, molecules, chemical equations, acids and bases, the periodic table and organic chemistry.
This document contains a 45 question chemistry exam from 1994 with multiple choice answers for each question. The questions cover a wide range of chemistry topics including organic chemistry reactions, properties of acids and bases, transition metals, thermodynamics, kinetics, and other general chemistry concepts.
This document contains a 30 question multiple choice quiz on inorganic chemistry topics including crystal field theory, coordination complexes, organometallic chemistry, and acid-base chemistry in non-aqueous solvents. The questions cover topics such as ligand properties, d-orbital splitting, reaction mechanisms, electronic configurations, and biological roles of metal ions. An answer key is provided at the end with the correct response for each question lettered a-d.
This document provides an unsolved chemistry exam from 1998 containing 66 multiple choice questions testing various chemistry concepts. The questions cover topics such as oxidation states, IUPAC naming, isomerism, acid-base reactions, equilibrium, electrochemistry, and organic chemistry reactions.
The document is a 15 question post-test on electrochemistry. It contains multiple choice questions testing understanding of electrolysis apparatus, electrolytes, half-reactions, and products of electrolysis for various molten salts including sodium chloride, lead(II) bromide, and potassium iodide. Diagrams of electrolysis set-ups are provided with some questions referring to labeled components or substances.
Ba
137
Strontium
38
Rb
Rubidium
44
Sr
88
Potassium
19
K
39
Magnesium
12
Mg
24
Calcium
20
Ca
40
This document consists of (1) a chemistry exam with multiple choice questions testing knowledge of concepts such as electrolysis, chemical reactions, and the periodic table and (2) a periodic table. The exam tests understanding of fundamental chemistry concepts through 40 multiple choice questions.
Ba
137
Strontium
38
Rb
Rubidium
44
Sr
88
Potassium
19
K
39
Magnesium
12
Mg
24
Calcium
20
Ca
40
This document consists of (1) a chemistry exam with multiple choice questions testing knowledge of chemistry concepts and principles, (2) a periodic table, and (3) printed information about the exam.
This document contains a 50-question multiple choice test on chemistry concepts. The questions cover topics like chemical formulas, periodic trends, chemical bonding, stoichiometry, acid-base reactions, and organic chemistry. Each question is followed by 4 answer choices labelled A, B, C, or D.
1) The document provides a chemistry exam for Class XII students with three sections - multiple choice questions, short answer questions, and descriptive answer questions.
2) The multiple choice section contains 16 questions testing concepts across the chemistry curriculum.
3) The short answer section contains 8 questions requiring students to provide explanations, equations, or names for various chemistry concepts.
4) The descriptive answer section provides 3 essay questions where students must explain processes, properties, or reactions in fuller detail. The exam aims to comprehensively test students' understanding of chemistry.
This document consists of 15 printed pages and 1 blank page related to a chemistry exam. The exam covers topics such as the periodic table, chemical formulas and equations, and chemical reactions. It provides multiple choice questions to test understanding of these chemistry concepts.
This document consists of 15 printed pages and 1 blank page related to a chemistry exam. The exam covers topics such as the periodic table, chemical equations, and chemical reactions. It provides multiple choice questions to test understanding of these chemistry concepts.
This 15-page document appears to be part of an exam for the International General Certificate of Secondary Education in Chemistry. The exam contains 40 multiple choice questions covering various topics in chemistry such as the periodic table, chemical bonding, electrolysis, and chemical reactions. It includes a copy of the periodic table on page 16 for reference.
This document provides a chemistry exam review with 99 questions from the 2013 SPM exam. It includes the exam paper sections, topics covered in each year from 2008-2012, and the number of questions from each topic. It then lists the first 20 questions from the exam paper along with multiple choice answers. The questions cover topics like chemical bonding, acids and bases, rates of reaction, and electrochemistry.
This document contains a SPM 2004 exam paper for Chemistry with 40 multiple choice questions testing various chemistry concepts. The questions cover topics such as states of matter, properties of substances like acids and bases, chemical equations and reactions including combustion, electrolysis, and displacement. Sub-atomic particles, relative atomic mass, and mole concept are also assessed. Diagrams of experimental set-ups and molecular structures are provided with some questions.
This document defines redox reactions as processes where electrons are either gained (reduction) or lost (oxidation). It provides examples of calculating oxidation states and naming ionic compounds. It then discusses a redox reaction between iron(II) chloride and chlorine, writing balanced equations and identifying oxidizing/reducing agents. Finally, it covers a redox reaction between iodide and dichromate ions, including half and overall equations.
This 16-page document appears to be part of an exam for the International General Certificate of Secondary Education in Chemistry. It contains 40 multiple choice questions testing concepts in chemistry such as the periodic table, chemical bonding, acids and bases, and chemical reactions. It also includes a periodic table as a reference.
This document contains a 20 question multiple choice quiz about concepts related to atomic structure, bonding, and compounds. The questions cover topics like ionic bonding, metallic bonding, properties of ionic and covalent compounds, electron configuration, and electrolysis.
1. The document is an exam for the International General Certificate of Secondary Education in Chemistry. It consists of 40 multiple choice questions testing students' knowledge of chemistry concepts and experiments.
2. The questions cover topics like chemical reactions, compounds, elements, acids and bases, the periodic table, and industrial processes. Students are asked to identify apparatus, interpret chemical equations and diagrams, and apply their understanding of chemistry principles.
3. To earn marks, students must choose the single best answer for each question, recording their responses on an answer sheet within the allotted 45 minutes. Working through the exam tests students' comprehension of fundamental chemistry ideas and their ability to apply critical thinking to multiple choice questions.
1. The document is an exam for the International General Certificate of Secondary Education in Chemistry. It consists of 40 multiple choice questions testing students' knowledge of chemistry concepts and experiments.
2. The questions cover topics like chemical reactions, compounds, acids and bases, the periodic table, and industrial processes. Students are asked to identify apparatus, interpret chemical equations and diagrams, and apply their understanding of chemistry principles.
3. The exam provides a periodic table for reference and allows the use of a calculator. It aims to comprehensively assess students' mastery of introductory chemistry concepts and skills.
The document provides a multiple choice chemistry exam with 40 questions covering topics like the periodic table, chemical bonding, acids and bases, redox reactions, and organic chemistry. It includes a periodic table as a reference. Students are instructed to choose the single best answer for each question and record their responses on an answer sheet within 45 minutes.
This document provides information about an International General Certificate of Secondary Education (IGCSE) chemistry exam, including instructions for the multiple choice exam, details about the exam format and timing, and a reminder that the periodic table is provided. The exam consists of 40 multiple choice questions testing students' knowledge of chemistry concepts ranging from chemical bonding to acid-base reactions to the reactivity series. Calculators are permitted and rough work should be done in the exam booklet.
The document contains summaries of several diagrams showing different scientific processes and experiments. It provides answers to questions about the diagrams, identifying variables, materials, observations, and conclusions. The key information summarized is that the document contains expert summaries and explanations of multiple scientific diagrams and experiments.
This document consists of 16 pages related to a chemistry exam, including:
1. 15 multiple choice questions on chemistry topics
2. 1 blank page
3. Instructions for exam takers on how to fill out the multiple choice answer sheet.
This document provides information about atomic structure, the periodic table of elements, and chemical bonds. It begins by discussing the properties of substances X, Y, and Z, including their states of matter and bonding properties. It then covers concepts like melting and boiling points on a graph. The document also contains practice questions on chemical formulas and equations, including calculating mole ratios and determining empirical and molecular formulas. It provides the answers to these practice questions. In summary, the document reviews key concepts in atomic structure and bonding and provides worked examples of related chemical calculations.
Similar to Selaras 3 form 4 2011=dgn jawapan=terkini (20)
This document contains descriptions and diagrams of several chemical reactions and experiments:
1) A reaction between magnesium and copper chloride produces magnesium chloride and copper.
2) Precipitation of silver chloride is achieved through a reaction of silver nitrate and sodium chloride.
3) Copper(II) oxide reacts with sulfuric acid to produce copper(II) sulfate and water.
4) Heating zinc carbonate produces zinc oxide and carbon dioxide, and the gas changes limewater to chalky.
Revision on consumer, r te, thermo and carbon compoundMRSMPC
The document describes two experiments where zinc reacts with two different acids, labeled P and Q. In Experiment I, zinc reacts with Acid P, producing zinc chloride and hydrogen gas, while the temperature of the mixture increases. In Experiment II, zinc reacts with Acid Q, producing zinc sulfate and hydrogen gas, and again the temperature increases. The document provides data from Experiments I and II to study the rate of reaction between zinc and the two acids.
The document discusses different types of food additives and their functions, including:
- Colouring agents which restore colour to food
- Preservatives like benzoic acid and sodium nitrite which destroy microorganisms
- Antioxidants like ascorbic acid which prevent oxidation of food
- Flavouring agents like monosodium glutamate which give or enhance flavour
- Stabilisers and thickeners like pectin and gelatin which prevent separation and thicken foods
It also lists examples of specific additives that fall into each category.
The document discusses different types of food additives and their functions, including:
- Colouring agents which restore colour to food
- Preservatives like benzoic acid and sodium nitrite which destroy microorganisms
- Antioxidants like ascorbic acid which prevent oxidation of food
- Flavouring agents like monosodium glutamate which give or enhance flavour
- Stabilisers and thickeners like pectin and gelatin which prevent separation and thicken foods
It also lists examples of traditional medicines like ginger and garlic and their functions, as well as types and uses of modern medicines including analgesics, antibiotics, and psychotherapeutic drugs.
Revision on consumer, r te, thermo and carbon compoundMRSMPC
The document describes two experiments where zinc reacts with two different acids, labeled P and Q. In Experiment I, zinc reacts with Acid P, producing zinc chloride and hydrogen gas, while the temperature of the mixture increases. In Experiment II, zinc reacts with Acid Q, producing zinc sulfate and hydrogen gas, and again the temperature increases. The document provides data from Experiments I and II to study the rate of reaction between zinc and the two acids.
1) The document provides information about a chemistry pre-trial exam, including multiple choice questions about particles, physical properties, chemical reactions, and rates of reaction.
2) Section two involves questions about electrolysis of copper(II) sulfate solution and the products formed at the anodes and cathodes using different electrode materials.
3) Section three describes laboratory activities to prepare a salt through a reaction between zinc oxide and nitric acid, including excess reactants, products, and apparatus setup.
4) Section four involves questions about heat of neutralization reactions, including energy level diagrams and temperature change calculations.
5) Section five provides information about homologous series, including molecular formulas, boiling points, and
Revision for salt, electrochemistry, carbon compounds , thermochemistryMRSMPC
The document discusses several chemical formulas, equations, and calculations including the heat of precipitation of barium sulfate from a mixture of potassium sulfate and barium chloride solutions. It also addresses the properties and production of natural rubber from latex and how treating rubber with sulfur through the process of vulcanization improves its properties for uses such as in tires and gloves.
Soap and detergent, medicine , food additives consumer 2011-edited-2MRSMPC
This document provides information about chemicals for consumers. It discusses soaps, detergents, and their properties. Soap is the salt formed from fatty acids and alkalis. Their general formula is RCOO-Na+. Detergents are salts formed from alkyl sulfates and alkalis. Soap and detergent both lower surface tension and emulsify oils to suspend dirt particles in water. Detergents are more effective than soap in hard water since they do not form insoluble precipitates. The document also discusses food additives and their functions like dyes, preservatives, flavorings, and stabilizers. Finally, it covers modern medicines like analgesics, antibiotics, and psychotherapeutic drugs along with their examples,
fats and natural rubber module 3 carbon compounds with answersMRSMPC
The document discusses key concepts related to fats and oils including:
1) Fats are solid at room temperature and found in animals, while oils are liquid at room temperature and found in plants.
2) Fat molecules contain saturated fatty acids that have no carbon-carbon double bonds, while unsaturated fatty acids contain at least one double bond.
3) Glycerol is an alcohol that reacts with fatty acids to form fat or oil molecules through esterification reactions.
1) The document provides formulas and examples of strong acids, weak acids, strong bases and weak bases.
2) It describes 4 chemical properties of acids: reaction with metals, oxides, alkalis and carbonates.
3) Beaker A shows acidic properties due to hydrogen chloride ionizing in water to form H+ ions, while Beaker B shows no change.
Discussion on rate of reaction =for quiz 1 and 2MRSMPC
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Selaras 3 form 4 2011=dgn jawapan=terkini
1. Name:……………………………………….. College no:
…………………………….
Class : ………………………………Teacher’s name :
………………………………..
MAKTAB RENDAH SAINS MARA
%
PENGKALAN CHEPA
STANDARDIZED TEST 1 SEM 2, 2011
CHEMISTRY
FORM 4
1 1/2 HOURS
INSTRUCTIONS: Section Question Full Marks
mark
A OBJECTIVE 20
(20)
1. This question paper consists of THREE
sections: B 1 10
Section A ,B AND C 2 10
2. Answer all questions.show your working, it 3 10
may help you to get marks.
3. If you wish to cancel any answer, neatly cross C 1 20
out the answer TOTAL 70
4. The diagrams in the questions provided are
not drawn to scale unless stated. This booklet contains of 13 printed pages
5. You may use a non-programmable scientific including the front page.
calculator.
Section A:Objective Questions
1 The equation shows the reaction of nitrogen, N2 and hydrogen, H2 to form ammonia,
NH3.
2. N2 (g) + 3H2 (g) → 2NH3(g)
Based on the equation, how many moles of ammonia is formed if 2 moles of
nitrogen react with 6 moles of hydrogen?
A 2
B 4
C 5
D 6
2. The diagram shows the arrangement of atoms of a substance.
Which of the following substances has the same arrangement of atoms as in the
diagram?
A Aluminium
B Copper
C Brass
D Iron
3. Which of the following pairs is correct monomer for the polymer?
Monomer Polymer
A Ethene Polythene
B Glucose Protein
C Amino acid Carbohydrate
D Isopropene Nylon
4. Which of the following substances is found in a photochromic glass?
A Plastic and ceramic
3. B Glass and silver chloride
C Plastic and sodium chloride
D Ceramics and silver chloride
5. Which of the following chemical equations represents the formation of oleum
in Contact Process?
A S + O2 → SO2
B 2 SO2 + O2 → 2 SO3
C SO3 + H2SO4 → H2S2O7
D H2S2O7 + H2O → 2 H2SO4
6. An alloy which is used to make surgical forceps has the following composition:
Iron - 74 %
Chromium - 18 %
Carbon - 8%
This alloy is strong and does not corrode easily. What is this alloy?
A Bronze
B Pewter
C Duralumin
D Stainless steel
7. Pure metals are ductile and malleable. This is because
A atoms can move freely
B layers of atoms can slide easily
C bonding between atoms are weak
D atoms are orderly and closely packed
8. Why is ceramic used for the wall of a nuclear reactor
A. ceramic is very hard
4. B. Ceramic is malleable
C. Ceramic is inert towards chemicals
D. Ceramic can with stand high temperature
9 Which of the following pairs is correct?
Industrial process Product Catalyst
A Contact process Sulphuric acid Platinum
B Haber process Ammonia Iron
C Cracking process Hydrocarbon Vanadium(II) oxide
D Ostwald process Hydrochloric acid Copper
10. In order to produce as glass that is more resistant to heat and chemicals,
substance X is added to soda lime glass in the manufacturing process. What is
X?
A. Boron oxide
B. Lead (II) oxide
C. Sodium carbonate
D Calcium carbonate
11. Which of the following substance is electrolyte?
A. Alcohol
B. Copper(II) chloride
C. Glucose solution
D. Mercury
12. Figure 1 shows the set-up of apparatus for the electrolysis of ferum(II) sulphate
solution.
5. Carbon
Carbon
electrode Y
electrode X
Dilute ferum(II)
sulphate solution
Figure 1
What is formed at carbon electrode X ?
A. Ferum
B. Oxygen
C. Sulphur dioxide
D. Hydrogen gas
13. Electrolyte can conducted electricity because an electrolyte
A. is a metal
B. contains mobile ions
C. allows the flow of electrons
D. conducts electricity in the aqueous form
14. Table 1 shows the results of an experiment for three chemical cells.
Chemical cell Metal pairs Negative terminal Cell voltage / V
X P and R R 1.9
Y R and S S 0.8
Z Q and R R 0.3
Table 1
Which of the following can be deduced from table1?
I. The cell voltage is 1.6 V when P and Q are used as electrodes.
II. The cell voltage is 1.1 V when P and S are used as electrodes.
III. Electrons flow from terminal Q to terminal S in the metal pair Q and S.
IV. P functions as a positive terminal when it is paired with Q, R or S in a cell.
A. I and IV only
B. II and III only
C. I, II and III only
D. I, II, III and IV
6. Copper foil Silver foil
Sodium Silver nitrate
sulphate solution
solution
Figure 3
15. Copper is above silver in the Electrochemical Series. An experiment is set up as
shown in figure 3. Which of the following occur?
I The solution around the copper foil turns blue.
II Silver crystals slowly form on the silver foil.
III Electrons flow in the direction shown
IV The bulb glows.
A. I, II and III only
B. I and III only
C. II and IV only
D. I, II, III and IV
Zn + Cu2+ Cu + Zn2+
16. The above equation represents a reaction in a chemical cell. Which of the following
statements is TRUE.
A. zinc electrode is the positive terminal
B. Copper ions receive electrons
C. Electron flows from the copper rod to the zinc rod.
D. The copper rod is more electropositive then the zinc rod.
7. 17. 10 ml of copper(II) sulphate solution was left in an iron cup overnight. Which of the
following statements describes what happened?
A. the solution evaporated completely and some copper(II) sulphate
crystals were left behind.
B. The part of the container in contact with the solution was coated
with copper.
C. Some fine iron particles were formed in the solution.
D. The solution turned colorless.
18. Which of the following ions attracted to cathode during electrolysis of copper(II)
sulphate solution?
A. ion copper(II) only.
B. ion copper(II) and ion sulphate.
C. Ion copper(II) and ion hydrogen.
D. Ion hydrogen and ion hydroxide.
19. Which of the following combination can be used in electroplating iron spoon with
nickel metal?
Cathode Anode Electrolytes
A. Iron spoon nickel nickel(II) sulphate solutions
B. Nickel iron spoon nickel(II) sulphate solutions
C. Iron spoon nickel iron(II) sulphate solutions
D. Nickel iron spoon iron(II) sulphate solutions
20. In the electrolytic manufacture of aluminium, what is the anode (positive electrode)
made of?
A. copper
B. graphite
C. platinum
D. steel
8. SECTION B: SUBJECTIVES
1 Diagram 1 shows the manufacture of sulphuric acid.
Concentrated
sulphuric acid
catalyst
sulphur Waste gas
DD SO2 + O2 SO3
Dry air
Substance Y
water sulphuric acid, H2SO4
(a) (i) What is the name of this process?
…………………………………………………………………………………..
[1 mark]
(ii) State the name of catalyst X.
…………………………………………………………………………………..
[1 mark]
(iii) State the name of substance Y.
…………………………………………………………………………
[1 mark]
(iv) Substance Y is formed when sulphur trioxide reacts with concentrated
sulphuric acid. Write the chemical equation for this reaction.
…………………………………………………………………………
[2 mark]
9. (b) Ammonia is manufactured for industrial purposes through a process
(i) State 3 conditions for the manufacture of ammonia
………………………………………………………………………………………………
………………………………………………………………………………………………
……………………………………………………………………………………………
[3 marks]
(ii) State 2 uses of ammonia in industry
…………………………………………………………………………………………
…………………………………………………………………………………………
[ 2 marks]
2. (A)Figure 1 below shows the apparatus arrangement to study the electrolysis of dilute
copper(II) nitrate.
copper(II)
nitrate
carbon
carbon
electrode X
electrode Y
A
Figure 1
a) Identify the cathode and the anode on the figure above by writing the word
“cathode” and “anode” in the figure.
[1 marks]
b) State the energy changes that occur in the process.
______________________________________________________________
[1 mark]
10. c) Write down all the formulae of ions present in the copper(II) nitrate solution.
__________________________________________________________
__________________________________________________________
[2 marks]
d) What observations can be made at
(i) X?
___________________________________________________________
[1 mark]
(ii) Y?
__________________________________________________________
[1 mark ]
(B) Figure 2 below shows the apparatus arrangement to study the electrolysis of
molten lead (II) bromide.
a) Write the half equation for the reaction occurred
i) At the anode :
____________________________________________________
ii) At the cathode
____________________________________________________
[ 2marks]
11. b) Name the substances formed at each of the electrodes
i) Anode : _________________________________________________
ii) Cathode : _______________________________________________
[ 2marks ]
3)
A) Diagram below shows a Daniel cell
a) Mark the positive and negative electrodes on the diagram [ 1m]
b) What is the function of the porous pot? [ 2m]
________________________________________________________________
________________________________________________________________
c) State an observation at the zinc electrode after 5 minutes [ 1m]
12. ________________________________________________________________
d) Write half equation at the copper electrode [1m]
________________________________________________________________
e) If the copper electrode is replaced with an iron electrode, what will be the change
in voltmeter reading? Explain your answer [2m]
________________________________________________________________
________________________________________________________________
B) A student wish to electroplate an iron key with silver. Draw a labeled diagram to
show how this can be carried out in a laboratory. [ 3m]
14. ii) Diagrams A and diagram B below shows arrangement of atoms in 2 different
substances.
• Suggest what substance A is and substance B.
• Explain why the arrangement in B gives a better property than the
arrangement in A. [6 marks]
Diagram A Diagram B
iii) Give two advantages of alloy [2 marks]
b) Diagram below is a synthetic polymer.
i) Name the polymer above and also name its monomer [2 marks]
ii) State 2 ways to reduce the pollution caused by synthetic polymer [2 marks]
iii) Which type of glass is used for lab apparatus? Explain your answer [3 marks]
v) Photochromic glass is a glass that is sensitive towards light.
State one use of photochromic glass and explain its use [3marks]
15. No. Answers Marks
QUESTION 1
1.a (i) Contact process 1
(ii) Vanadium(V) oxide 1
(iii) Oleum 1
(iv) SO3 + H2SO4 H2S2O7 2
1m 1m
1.b(i) Temperature: 450-550oC 1
Pressure : 200atm 1
Catalyst : Iron 1
bii) - Manufacturing of fertilizer 1
- Manufacturing of nitric acid 1
QUESTION 2
2.(A) a X – anode 1
Y - cathode
2.b Electrical energy to chemical energy 1
2+ - + -
2.c Cu , NO3 , H , OH 2
d(i) Colourless gas released 1
d(ii) Brown solid deposited 1
2(B)a (i) 2Br- Br2 + 2e- 1
2+ -
(ii) Pb + 2e Pb 1
b) (i) anode : Bromine gas 1
(ii) cathode: Lead metal 1
QUESTION 3
3(A)
a) Zinc: negative terminal 1
Copper: positive terminal
b) - allow the movement of ions between two solution 1
- prevent two solutions from mixing 1
c) Electrode becomes thinner 1
d) Cu2+ + 2e- Cu 1
e) - Voltmeter reading decrease 1
- distance between Zn and Fe is shorter than Zn and Cu in Electrochemical Series 1
3(B)
Functional
diagram-1
m
Correct
electrode-1
m
Correct
electrolyte-
1m
SKEMA JAWAPAN FORM 4 (SELARAS 1 SEM2 2011):
16. Essay:
No. Answers Marks
a)i) A mixture of metals in a fixed composition to improve the properties of 1
a particular metal
a)ii) • Substance A: Pure metal; substance B: Alloy 1
• In pure metal, atoms are the same size 1
• The atoms are in orderly arrangement 1
• The layers of atoms in pure metal can slide over one another when
force is given 1
• In alloy, different atoms have different size 1
• The presence of atoms of other metals disturb the orderly
arrangement of atoms in the metal 1
• 1
• This prevent the layer of atoms from sliding when force is given
a)iii) -Stronger and harder
-Resistant towards corrosion Any 2
-Have a better furnish and lustre (2marks)
b)i) Polymer: Polythene 1
Monomer: Ethene 1
b)ii) - Reduce ,reuse and recycle synthetic polymer 1
- Use biodegradable polymers 1
b)iii) - Borosilicate glass // Fused glass 1
- Resistant towards chemical attack 1
- Heat resistant 1
b)iv) - Use: Optical lenses, car windshields, smart energy efficient windows 1
in buildings, information display panels, lens in cameras, optical 1
switches and light intensity meters 1
- Because it darkens the glass when exposed to sunlight
-due to presence of silver chloride
17. Objectives
1 2 3 4 5 6 7 8 9 10
B C A B C D A D B A
11 12 13 14 15 16 17 18 19 20
B B B A A B B C A B