This document provides the marking schemes for the Chemistry Mid Year Examination 2011 Papers 1, 2 and 3 in Malaysia.
The marking schemes summarize:
1) The answers to multiple choice questions in Paper 1.
2) The marking rubrics and scores for structured and extended response questions in Papers 2 and 3, including the expected answers and working.
3) Examples of questions and responses from Papers 1, 2 and 3 to illustrate the marking schemes.
The document is intended to guide examiners in accurately and consistently marking the Chemistry Mid Year Examination papers based on the essential information and answers provided in the marking schemes.
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.
Marking scheme-chemistry-perfect-score-module-form-4-set-4Mudzaffar Shah
The document provides a marking scheme for an exam on acids, bases, and salts. It includes:
1) 11 multiple choice questions on acid-base concepts like neutralization reactions, ions present, calculating molarity, and distinguishing between strong/weak acids.
2) 9 more multiple choice questions testing identification of solutions, gas tests, and acid/base properties.
3) 10 essay questions requiring explanations of acid/base definitions, calculations of standard solutions, titration procedures, comparisons of acid types, and writing hypotheses and procedures for experiments.
4) Rubrics for grading lab reports with criteria like correctly recording burette readings, setting up tables, stating observations/inferences, and comparing
Engineering Chemistry 2 Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document appears to contain exam questions for an Engineering Chemistry course. It includes 8 multi-part questions covering various topics related to water treatment, corrosion, fuels, lubrication, and polymers. Students are instructed to answer any 5 of the 8 questions, with all questions carrying equal marks. The questions assess understanding of concepts like water softening methods, corrosion mechanisms, properties and uses of materials like polymers and fuels, and analytical techniques like titration.
Engineering Chemistry 1 Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document appears to contain an exam for an Engineering Chemistry course, with 8 multi-part questions covering various topics in chemistry. It provides the exam code, date, course details, instructions to answer 5 of the 8 questions, and then lists the 8 questions which cover topics such as water analysis, corrosion, fuels, polymers, lubrication, and refractories. Each question has between 2-4 parts requiring explanations of concepts, processes, comparisons, or calculations.
Engineering Chemistry Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains four sets of questions for an Engineering Chemistry exam. Each set contains 8 questions related to topics in engineering chemistry. The questions cover topics like water chemistry, corrosion, fuels, lubricants, polymers, coatings, and refractory materials. Students are instructed to answer any 5 of the 8 questions in each set, which vary in length from short answer to longer explanations and calculations.
Chemistry perfect-score-module-form-4-set-4Mudzaffar Shah
This document discusses acids, bases, and salts. It defines acids as compounds that produce hydrogen ions (H+) or hydronium ions (H3O+) when dissolved in water. Bases are defined as substances that can neutralize acids to produce salts and water.
It discusses the properties of strong acids and bases versus weak acids and bases. Strong acids and bases fully dissociate in water, while weak acids and bases only partially dissociate.
The document also discusses monoprotic, diprotic, and triprotic acids based on the number of hydrogen ions they can donate. Equations are provided for the dissociation of several common acids like nitric acid, ethanoic acid, carbon
M A S S T R A N S F E R O P E R A T I O N S I J N T U M O D E L P A P E...guest3f9c6b
This document contains questions from a Mass Transfer Operations exam. It includes 8 questions related to various mass transfer topics like classification of mass transfer operations, diffusion, distillation design, and mass transfer correlations. The questions involve calculations related to diffusion rates, mass transfer coefficients, distillation column design parameters, and phase equilibrium data.
This thesis examines new routes for synthesizing environmentally friendly superabsorbent polymers. The author prepared various superabsorbent polymers cross-linked with different agents such as allyl sucrose, epoxy allyl sucrose, 1,4-butanediol diglycidyl ether, and ethylene glycol diacrylate. The polymers were characterized using techniques like NMR spectroscopy, FTIR, DSC, and their absorbency, rewetting properties, pH neutrality, and biodegradability were tested. The results showed that superabsorbent polymers cross-linked with natural and biodegradable agents like allyl sucrose and epoxy allyl sucrose performed better than polymers cross-linked with conventional
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.
Marking scheme-chemistry-perfect-score-module-form-4-set-4Mudzaffar Shah
The document provides a marking scheme for an exam on acids, bases, and salts. It includes:
1) 11 multiple choice questions on acid-base concepts like neutralization reactions, ions present, calculating molarity, and distinguishing between strong/weak acids.
2) 9 more multiple choice questions testing identification of solutions, gas tests, and acid/base properties.
3) 10 essay questions requiring explanations of acid/base definitions, calculations of standard solutions, titration procedures, comparisons of acid types, and writing hypotheses and procedures for experiments.
4) Rubrics for grading lab reports with criteria like correctly recording burette readings, setting up tables, stating observations/inferences, and comparing
Engineering Chemistry 2 Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document appears to contain exam questions for an Engineering Chemistry course. It includes 8 multi-part questions covering various topics related to water treatment, corrosion, fuels, lubrication, and polymers. Students are instructed to answer any 5 of the 8 questions, with all questions carrying equal marks. The questions assess understanding of concepts like water softening methods, corrosion mechanisms, properties and uses of materials like polymers and fuels, and analytical techniques like titration.
Engineering Chemistry 1 Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document appears to contain an exam for an Engineering Chemistry course, with 8 multi-part questions covering various topics in chemistry. It provides the exam code, date, course details, instructions to answer 5 of the 8 questions, and then lists the 8 questions which cover topics such as water analysis, corrosion, fuels, polymers, lubrication, and refractories. Each question has between 2-4 parts requiring explanations of concepts, processes, comparisons, or calculations.
Engineering Chemistry Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains four sets of questions for an Engineering Chemistry exam. Each set contains 8 questions related to topics in engineering chemistry. The questions cover topics like water chemistry, corrosion, fuels, lubricants, polymers, coatings, and refractory materials. Students are instructed to answer any 5 of the 8 questions in each set, which vary in length from short answer to longer explanations and calculations.
Chemistry perfect-score-module-form-4-set-4Mudzaffar Shah
This document discusses acids, bases, and salts. It defines acids as compounds that produce hydrogen ions (H+) or hydronium ions (H3O+) when dissolved in water. Bases are defined as substances that can neutralize acids to produce salts and water.
It discusses the properties of strong acids and bases versus weak acids and bases. Strong acids and bases fully dissociate in water, while weak acids and bases only partially dissociate.
The document also discusses monoprotic, diprotic, and triprotic acids based on the number of hydrogen ions they can donate. Equations are provided for the dissociation of several common acids like nitric acid, ethanoic acid, carbon
M A S S T R A N S F E R O P E R A T I O N S I J N T U M O D E L P A P E...guest3f9c6b
This document contains questions from a Mass Transfer Operations exam. It includes 8 questions related to various mass transfer topics like classification of mass transfer operations, diffusion, distillation design, and mass transfer correlations. The questions involve calculations related to diffusion rates, mass transfer coefficients, distillation column design parameters, and phase equilibrium data.
This thesis examines new routes for synthesizing environmentally friendly superabsorbent polymers. The author prepared various superabsorbent polymers cross-linked with different agents such as allyl sucrose, epoxy allyl sucrose, 1,4-butanediol diglycidyl ether, and ethylene glycol diacrylate. The polymers were characterized using techniques like NMR spectroscopy, FTIR, DSC, and their absorbency, rewetting properties, pH neutrality, and biodegradability were tested. The results showed that superabsorbent polymers cross-linked with natural and biodegradable agents like allyl sucrose and epoxy allyl sucrose performed better than polymers cross-linked with conventional
Chemical Technology Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains four sets of questions for a Chemical Technology exam. The questions cover topics such as the manufacture of chemicals like chlorine, sodium carbonate, ammonia, and vinyl chloride. Other topics include cryogenics, shift converters, oil refining, soap production, pulping processes, and environmental issues related to the paper industry. Students must choose five questions from one of the four sets to answer in the exam.
This document provides a specimen mark scheme for the GCSE Additional Science Chemistry 2 Higher Tier exam. It outlines the marking criteria for questions assessing students' knowledge of chemistry concepts like chemical reactions, electrolysis, and molecular structure. It also provides the answers and marks allocated to multiple choice and extended response exam questions.
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.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
The document discusses CIE's use of variant question papers for some popular assessments with large candidatures. It explains that while the content and question types remain the same, there are now two variants of the question paper, mark scheme, and principal examiner's report for one component. Centres will use only one variant, but this provides access to more past examination material. It includes a diagram showing the relationship between the question papers, mark schemes, and reports for the two variants. The document also provides contact information for questions about these changes.
The document discusses UltraPerformance Convergence Chromatography (UPC2) which utilizes liquid carbon dioxide as a mobile phase to provide increased selectivity compared to liquid and gas chromatography. UPC2 leverages the principles of normal phase chromatography with the ease of use of reversed-phase liquid chromatography. The ACQUITY UPC2 System delivers reliability, robustness, sensitivity and throughput for this technique. UPC2 offers unique benefits for applications in pharmaceuticals, food and beverage, chemicals and more.
New Developments Through Microscopic Reconstruction of the Nature of Fluidize...Masayuki Horio
Presentation was made at AIChE Particle Technology Forum as an Award Lecture.
After a brief review of achievements of fluidization engineering over decades, a discussion is made on one of the latest issues for applications in material industries as well as for the improvements in reliability of many fluidization processes, i.e., granulation and defluidization issues.
2.1 Background
For a long period, phenomena associated with agglomerating fluidization have been treated with complete empiricism and scientific lights were shed seldom on them. It was, however, natural because the basic intention of fluidization has long been the better gas and solid contacting and, accordingly, agglomeration has been only one of unwanted side effects, which, once technically avoided, tend to be forgotten. At the same time, knowledge on elementary processes that should be relevant to agglomerating fluidization, e.g., bubble characteristics, forces acting among fluidized particles, surface characteristics of solids etc., was only gradually established during the last decades.
Defluidization/agglomeration issues are, however, quite significant in a majority of fluidization processes probably except for gas-to-gas catalytic processes. In polyolefin processes agglomeration due to softening of plastic particles in local hot spots should be avoided. In a polyolefin reactor it has been confirmed by a DEM simulation of Kaneko et al. (1998) that a stable solid circulation does not help removing the heat of polymerization. Instead, a solid motion induced by the always-fluctuating bubbling action is necessary as shown in Fig. 3.
Ash melting and agglomeration, which finally causes defluidization, limits the operating temperature and pressure of pressurized fluidized bed combustion (PFBC) or gasification (PFBG). Figure 4 shows the so-called "sinter eggs" formed in a FBC boiler that is close to those found in AEP Tidd PFBC. Sinter egg/grain formation is again experienced recently in a commercial scale PFBC in Japan.
Kertas 2 pep pertengahan tahun sbp 2011norainiamin
The document provides the marking scheme for Chemistry Paper 1, 2 and 3 for a mid-year exam in 2011. It includes the answers and marks allocated for each question in the three papers. For Paper 1, it lists the answers for 50 multiple choice questions. For Paper 2, it provides the answers and explanations for 9 questions. For Paper 3, it outlines the scoring rubrics for assessing 5 long answer questions on topics like the effect of temperature on reaction rate and variables in an experiment. The marking scheme aims to standardize the evaluation of students' responses for the Chemistry mid-year exam across its three papers.
This document is an engineer's guide to fiber reinforced plastic (FRP) technology published by Reichhold, Inc. It provides an introduction to industrial applications of FRP process equipment and discusses FRP material selection. The guide focuses on selecting appropriate resins for the corrosion barrier and structural laminate layers. It covers resin technologies and properties as well as codes and standards for FRP. The document aims to educate engineers on composites technology so they can effectively incorporate FRP materials into industrial designs.
Dr.Ir. Gatot Trimulyadi : The adsorption behavior of chitin and its concerns with various degree of deacetylization. This high adsorption capacity was ascribable primarily to its remarkable hydrophilicity in cooperation with the relatively high amino group content. It is indicate that the importance of hydrophlicity and suggest that, in order to develop adsorbents of high capacity, it is make indicate the importance of hydrophilicity essential to make chitin derivatives highly hydrophylic and yet insoluble in water.
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 is a chemistry exam for a Level 3 course on aqueous systems from 2011. It contains 4 questions testing understanding of properties of aqueous solutions including: classifying solutions as acids/bases, discussing relative concentrations of species in solutions, calculating concentrations from solubility expressions and pH, and interpreting titration curves. The exam is 5 pages long and students are advised to spend 45 minutes answering the questions.
This document is a mark scheme for a chemistry exam. It provides guidance to teachers on how to award marks to exam questions. It shows the requirements to receive marks, such as specifying the correct answers or showing the correct steps and reasoning. It does not discuss the exam itself or alternative answers, only the basis for marking. Teachers should use this document along with the exam papers and exam report to properly award marks to student responses.
The document discusses changes made by CIE to use different variants of some question papers for assessments with large candidatures, where previously there was only one variant, in order to provide more past examination material. It explains that the content and question types remain unchanged between variants, and that the relationships between question papers, mark schemes, and principal examiner's reports have been established. Candidates will typically only see one variant of a question paper for their country.
This document contains mark schemes for Chemistry examinations from June 2004, including:
- The mark scheme and maximum marks for multiple choice, core, and extended papers.
- Details on how examiners were instructed to award marks and handle unexpected responses.
- Grade thresholds for each exam component.
- Sample exam questions and answers with marks allocated.
Modul perfect score sbp biology spm 2014Cikgu Pejal
This document contains a biology module for a high-scoring SPM program in a fully residential school in 2014. It includes several diagrams and questions on topics like cell division, transport in cells, immunity, and hormonal control of the menstrual cycle. The questions test understanding of processes like meiosis, phagocytosis, and plant tropism responses. It also addresses environmental issues like air pollution and suggests actions the government could take to address it. In three sentences or less:
This biology module contains sample questions testing knowledge of various topics for a high school exam preparation program, including cell processes, human physiology systems, and environmental issues. Diagrams illustrate concepts like cell division stages and hormonal control of the menstrual cycle. Students are asked
This document provides information on cell structure and organization. It discusses:
1. The history of cell discovery by Robert Hooke and the cell theory developed by Schleiden and Schwann.
2. The structures and functions of key cellular components in animal and plant cells, including the plasma membrane, cytoplasm, nucleus, mitochondria, chloroplasts, vacuoles, and cell wall.
3. The differences between animal and plant cells, such as plant cells having a cell wall, chloroplasts, and a large central vacuole. Active cells contain more mitochondria and green plant cells contain more chloroplasts.
Cell specialization in multicellular organisms allows for division of labor, where different cell types perform specific functions. Through differentiation, cells acquire specialized structures to become tissues like muscle and nerve cells. Tissues combine to form organs like the heart and lungs, and organ systems work together to carry out body functions. This organization allows multicellular organisms to perform complex life processes more efficiently than single-celled organisms.
Chemical Technology Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains four sets of questions for a Chemical Technology exam. The questions cover topics such as the manufacture of chemicals like chlorine, sodium carbonate, ammonia, and vinyl chloride. Other topics include cryogenics, shift converters, oil refining, soap production, pulping processes, and environmental issues related to the paper industry. Students must choose five questions from one of the four sets to answer in the exam.
This document provides a specimen mark scheme for the GCSE Additional Science Chemistry 2 Higher Tier exam. It outlines the marking criteria for questions assessing students' knowledge of chemistry concepts like chemical reactions, electrolysis, and molecular structure. It also provides the answers and marks allocated to multiple choice and extended response exam questions.
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.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Dear Students/Parents
We at 'Apex Institute' are committed to provide our students best quality education with ethics. Moving in this direction, we have decided that unlike other expensive and 5star facility type institutes who are huge investors and advertisers, we shall not invest huge amount of money in advertisements. It shall rather be invested on the betterment, enhancement of quality and resources at our center.
We are just looking forward to have 'word-of-mouth' publicity instead. Because, there is only a satisfied student and his/her parents can judge an institute's quality and it's faculty members coaching.
Those coaching institutes, who are investing highly on advertisements, are actually, wasting their money on it, in a sense. Rather, the money should be invested on highly experienced faculty members and on teaching gears.
We all at 'Apex' are taking this initiative to improve the quality of education along-with each student's development and growth.
Committed to excellence...
With best wishes.
S . Iqbal
( Motivator & Mentor)
The document discusses CIE's use of variant question papers for some popular assessments with large candidatures. It explains that while the content and question types remain the same, there are now two variants of the question paper, mark scheme, and principal examiner's report for one component. Centres will use only one variant, but this provides access to more past examination material. It includes a diagram showing the relationship between the question papers, mark schemes, and reports for the two variants. The document also provides contact information for questions about these changes.
The document discusses UltraPerformance Convergence Chromatography (UPC2) which utilizes liquid carbon dioxide as a mobile phase to provide increased selectivity compared to liquid and gas chromatography. UPC2 leverages the principles of normal phase chromatography with the ease of use of reversed-phase liquid chromatography. The ACQUITY UPC2 System delivers reliability, robustness, sensitivity and throughput for this technique. UPC2 offers unique benefits for applications in pharmaceuticals, food and beverage, chemicals and more.
New Developments Through Microscopic Reconstruction of the Nature of Fluidize...Masayuki Horio
Presentation was made at AIChE Particle Technology Forum as an Award Lecture.
After a brief review of achievements of fluidization engineering over decades, a discussion is made on one of the latest issues for applications in material industries as well as for the improvements in reliability of many fluidization processes, i.e., granulation and defluidization issues.
2.1 Background
For a long period, phenomena associated with agglomerating fluidization have been treated with complete empiricism and scientific lights were shed seldom on them. It was, however, natural because the basic intention of fluidization has long been the better gas and solid contacting and, accordingly, agglomeration has been only one of unwanted side effects, which, once technically avoided, tend to be forgotten. At the same time, knowledge on elementary processes that should be relevant to agglomerating fluidization, e.g., bubble characteristics, forces acting among fluidized particles, surface characteristics of solids etc., was only gradually established during the last decades.
Defluidization/agglomeration issues are, however, quite significant in a majority of fluidization processes probably except for gas-to-gas catalytic processes. In polyolefin processes agglomeration due to softening of plastic particles in local hot spots should be avoided. In a polyolefin reactor it has been confirmed by a DEM simulation of Kaneko et al. (1998) that a stable solid circulation does not help removing the heat of polymerization. Instead, a solid motion induced by the always-fluctuating bubbling action is necessary as shown in Fig. 3.
Ash melting and agglomeration, which finally causes defluidization, limits the operating temperature and pressure of pressurized fluidized bed combustion (PFBC) or gasification (PFBG). Figure 4 shows the so-called "sinter eggs" formed in a FBC boiler that is close to those found in AEP Tidd PFBC. Sinter egg/grain formation is again experienced recently in a commercial scale PFBC in Japan.
Kertas 2 pep pertengahan tahun sbp 2011norainiamin
The document provides the marking scheme for Chemistry Paper 1, 2 and 3 for a mid-year exam in 2011. It includes the answers and marks allocated for each question in the three papers. For Paper 1, it lists the answers for 50 multiple choice questions. For Paper 2, it provides the answers and explanations for 9 questions. For Paper 3, it outlines the scoring rubrics for assessing 5 long answer questions on topics like the effect of temperature on reaction rate and variables in an experiment. The marking scheme aims to standardize the evaluation of students' responses for the Chemistry mid-year exam across its three papers.
This document is an engineer's guide to fiber reinforced plastic (FRP) technology published by Reichhold, Inc. It provides an introduction to industrial applications of FRP process equipment and discusses FRP material selection. The guide focuses on selecting appropriate resins for the corrosion barrier and structural laminate layers. It covers resin technologies and properties as well as codes and standards for FRP. The document aims to educate engineers on composites technology so they can effectively incorporate FRP materials into industrial designs.
Dr.Ir. Gatot Trimulyadi : The adsorption behavior of chitin and its concerns with various degree of deacetylization. This high adsorption capacity was ascribable primarily to its remarkable hydrophilicity in cooperation with the relatively high amino group content. It is indicate that the importance of hydrophlicity and suggest that, in order to develop adsorbents of high capacity, it is make indicate the importance of hydrophilicity essential to make chitin derivatives highly hydrophylic and yet insoluble in water.
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 is a chemistry exam for a Level 3 course on aqueous systems from 2011. It contains 4 questions testing understanding of properties of aqueous solutions including: classifying solutions as acids/bases, discussing relative concentrations of species in solutions, calculating concentrations from solubility expressions and pH, and interpreting titration curves. The exam is 5 pages long and students are advised to spend 45 minutes answering the questions.
This document is a mark scheme for a chemistry exam. It provides guidance to teachers on how to award marks to exam questions. It shows the requirements to receive marks, such as specifying the correct answers or showing the correct steps and reasoning. It does not discuss the exam itself or alternative answers, only the basis for marking. Teachers should use this document along with the exam papers and exam report to properly award marks to student responses.
The document discusses changes made by CIE to use different variants of some question papers for assessments with large candidatures, where previously there was only one variant, in order to provide more past examination material. It explains that the content and question types remain unchanged between variants, and that the relationships between question papers, mark schemes, and principal examiner's reports have been established. Candidates will typically only see one variant of a question paper for their country.
This document contains mark schemes for Chemistry examinations from June 2004, including:
- The mark scheme and maximum marks for multiple choice, core, and extended papers.
- Details on how examiners were instructed to award marks and handle unexpected responses.
- Grade thresholds for each exam component.
- Sample exam questions and answers with marks allocated.
Modul perfect score sbp biology spm 2014Cikgu Pejal
This document contains a biology module for a high-scoring SPM program in a fully residential school in 2014. It includes several diagrams and questions on topics like cell division, transport in cells, immunity, and hormonal control of the menstrual cycle. The questions test understanding of processes like meiosis, phagocytosis, and plant tropism responses. It also addresses environmental issues like air pollution and suggests actions the government could take to address it. In three sentences or less:
This biology module contains sample questions testing knowledge of various topics for a high school exam preparation program, including cell processes, human physiology systems, and environmental issues. Diagrams illustrate concepts like cell division stages and hormonal control of the menstrual cycle. Students are asked
This document provides information on cell structure and organization. It discusses:
1. The history of cell discovery by Robert Hooke and the cell theory developed by Schleiden and Schwann.
2. The structures and functions of key cellular components in animal and plant cells, including the plasma membrane, cytoplasm, nucleus, mitochondria, chloroplasts, vacuoles, and cell wall.
3. The differences between animal and plant cells, such as plant cells having a cell wall, chloroplasts, and a large central vacuole. Active cells contain more mitochondria and green plant cells contain more chloroplasts.
Cell specialization in multicellular organisms allows for division of labor, where different cell types perform specific functions. Through differentiation, cells acquire specialized structures to become tissues like muscle and nerve cells. Tissues combine to form organs like the heart and lungs, and organ systems work together to carry out body functions. This organization allows multicellular organisms to perform complex life processes more efficiently than single-celled organisms.
This document discusses the use of microbes in agriculture. It provides examples of microbes like bacteria and fungi that can be used as biological control agents against pests and as biofertilizers to fix nitrogen and solubilize phosphorus in soil. Biological control agents like Beauveria fungus and NPV virus can control insects like aphids and caterpillars respectively. Biofertilizers include nitrogen fixing bacteria like Rhizobium and algae like Anabaena. Effective Microorganisms solution contains lactic acid bacteria, yeast and photosynthetic bacteria that enhances crop growth and improves soil health. In conclusion, bio-control agents and biofertilizers are safer, cheaper and renewable alternatives to chemical pesticides
BIOLOGY FORM 4 CHAPTER 4 - CHEMICAL COMPOSITION OF THE CELL PART 2Nirmala Josephine
1. Enzymes speed up chemical reactions in cells by lowering the activation energy needed, allowing reactions to occur more quickly.
2. They are highly specific and each enzyme catalyzes only one reaction. Enzymes have an active site that allows only specific substrates to bind.
3. Many factors can affect enzyme activity, including temperature, pH, substrate and enzyme concentration, and presence of cofactors or inhibitors. Enzymes function best within a limited range of conditions.
The document appears to contain a marking scheme for a Science exam consisting of Paper 1 and Paper 2. It provides the answers to 50 multiple choice questions for Paper 1. For Paper 2, it lists 5 questions and provides the marking criteria and marks allocated for each question component or part. The marking scheme is intended for examiners and contains the guidelines for awarding marks to students' responses. It also notes that the document is confidential and copyrighted material intended solely for examiners.
1. The document contains information about chemical formulas, equations, bonding, and states of matter. It provides examples of writing balanced chemical equations and deriving empirical formulas.
2. Key concepts covered include ionic and covalent bonding, calculating number of moles, deriving empirical formulas from mass data, and distinguishing between physical properties of solids, liquids, and gases.
3. Practice problems are provided relating to identifying reactants and products, determining oxidation states, drawing electron configurations, and representing bonding diagrams.
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
This document contains sample questions and answers for a chemistry exam. It includes multiple choice and structured questions on topics like chemical formulas, chemical reactions, periodic table, and bonding. The document provides answers to sample exam questions on these chemistry topics in a modular format with the question number and corresponding answer and mark for each question.
1. The document provides instructions for a chemistry exam paper consisting of multiple choice questions testing concepts in chemistry.
2. It outlines the format of the paper including four sections - Section I tests for single correct answers, Section II allows for multiple correct answers, Section III again tests for single correct answers but in a paragraph format, and Section IV again tests for single correct answers.
3. Marking schemes and instructions for filling out the optical response sheet are also provided.
This document provides the mark scheme for the October/November 2011 GCE Advanced Level Physics exam paper 1, which contains 40 multiple choice questions. It lists the question number and key/correct answer for each question. Cambridge will not enter into discussions about these mark schemes. The mark schemes are published to provide guidance for teachers evaluating student responses on the exam.
This document is the mark scheme for the October/November 2011 GCE Advanced Subsidiary Level and GCE Advanced Level physics exam. It provides the answers to the multiple choice questions on the exam and guidance for teachers on marking student responses. The mark scheme lists the question number and correct answer for each of the 40 multiple choice questions on the exam paper. Cambridge will not enter into discussions about the mark scheme and published it to provide guidance for teachers marking the exam.
This document provides the mark scheme for the May/June 2009 Cambridge International Examinations GCE Ordinary Level Biology Paper 1 multiple choice exam. It lists the 40 questions from the exam paper and the corresponding correct answer for each question. The mark scheme is intended to guide teachers in understanding how the exam questions were intended to be marked. No discussion or correspondence regarding the mark scheme will be entered into by CIE.
Answer Chemistry Perfect Score & X A Plus Module 2013Adura Azlin Ishak
This document contains information about a chemistry module and mark scheme for Perfect Score & X A-Plus for 2013. It includes 5 sets of questions and answers with corresponding mark schemes. Each set covers different topics in chemistry including atomic structure, periodic table, chemical bonds, states of matter and changes of state. The questions test a range of skills from naming compounds and describing chemical processes to explaining phenomena based on chemical concepts.
This document provides an overview of the Chemistry Perfect Score & X - A Plus Module 2013. It outlines the topics that will be covered in the module, including the structure of the atom, chemical bonds, chemical formulae and equations, electrochemistry, acids and bases, carbon compounds, and more. Guidelines and techniques for answering questions in the SPM chemistry papers are also presented, such as understanding the different question formats and command words, scoring techniques to achieve an A, and how to describe experiments, write equations, and plan experiments. The document aims to help students learn key chemistry concepts and prepare for the SPM chemistry exam.
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.
The document reports on the 6th International Students Science Fair held from September 13-17, 2010 at the Australian Science & Mathematics School in Adelaide, South Australia. It was authored by En. Adura Azlin bin Ishak from SM Sains Alam Shah in Kuala Lumpur, Malaysia.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already have a condition.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already suffer from conditions like anxiety and depression.