The document provides information about elements on the periodic table including P, Q, R, S, T and U. It asks questions to test understanding of their positions, properties, and reactions. Specifically, it asks to:
1) Identify the positions of R, S, and T based on their provided characteristics.
2) Identify which element exists as a monoatomic gas.
3) Identify which of Q or S reacts more vigorously with water and write the balanced equation.
4) Write the formulas for the two acids produced when U dissolves in water and describe the observation with litmus paper.
5) Name the liquid produced when P reacts with R.
6)
Online learning to understand the concept and application of chemicals on the topic of salt. These slides were uploaded to help students understand the basic concepts of chemistry. Independent study in Freestyle.com
Online learning to understand the concept and application of chemicals on the topic of salt. These slides were uploaded to help students understand the basic concepts of chemistry. Independent study in Freestyle.com
IIT JAM Geology 2019 Full Question Paper || Sourav Sir's ClassesSOURAV DAS
IIT JAM 2019 Full Question Paper
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Soalan dan Skema Kertas 2 Fizik Pertengahan Tahun Kedah 2014 provided by Majlis Pengetua Sekolah Menengah (MPSM) Kedah. Find out more SPM Papers at spmsoalan.wordpress.com
Interparticle Interactions and Dynamics in Solutions of Copper (II), Cobalt (...Dmitry Novikov
This presentation is a report from the PLMMP-2018 conference. For any information contact me here: dmitrynovikovs@gmail.com
Abstract
This work is a continuation of the systematic study of unsymmetrical electrolytes in non-aqueous media, carried out at the Department of Inorganic Chemistry of V.N. Karazin Kharkiv National University [1].
Here we report the results of the conductometric study of diluted solutions of Cu(BF4)2, Zn(BF4)2 and Co(BF4)2 in acetonitrile (AN) at 5-55 oC. The extended Lee-Wheaton equation was used to procced conductometric data and obtain primary association constants, limiting equivalent conductance of electrolytes and limiting ionic conductivities. The primary association constants were then used to interpret the contribution of the ionic solvation and association in terms of contact ionic pairs, solvent-separated ionic pairs and short-range non-Coulomb interionic potential.
Obtained values of total limiting equivalent conductivity of electrolyte and the limiting conventional transference numbers allowed us to divide the equivalent conductivity on ionic constituents. These data were later proceeded to evaluate the parameter of dynamics of ionic solvation, within the modified theory of the dielectric friction.
Additionally, densimetric study was carried out to derive structural parameters of ion solvation of Cu(BF4)2, Zn(BF4)2 and Co(BF4)2 in AN at 5-55 oC.
Finally, molecular dynamics simulations were performed on the same electrolyte/AN systems by means of MDNAES package [2] to elucidate particle dynamics and microscopic structure within the first and second co-ordination shells of copper (II), cobalt (II) and zinc (II) cations in AN at 25 °C.
References
[1] O.N. Kalugin, V.N. Agieienko and N.A. Otroshko, J. Molec. Liquids, 165, 78-86 (2012).
[2] O. N. Kalugin, M. N. Volobuev, and Y. V. Kolesnik, Khar. Univ. Bull., Chem. Ser. 454, 58-80 (1999).
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Structure & essay Questions (periodic table of element)
1. PERIODIC TABLE OF ELEMENT
Structure Question
1 Diagram 2.1 shows the Periodic Table of elements. The letters P, Q and U do not
represent the actual symbols of the elements.
1 2 13 14 15 16 17 18
1 P
2
3 Q U
4
5
6
FIGURE 2.1
(a) Table 2.2 shows one characteristic for each of elements R, S and T.
Element Chracteristic
R Located in Period 2 and has 6 valency electrons
S Has electron arrangement 2.8.8.1
T Has a duplet in the only electron shell
Table 2.2
Referring to Table 2.2, indicate the positions of R, S and T by writing the letters in
the correct boxes of the above Periodic Table.
[3 marks]
(b) Which element among P, Q, R, S, T and U, exists as a monoatomic gas?.
……………………………………….. .......................................................................
[1 mark]
(c) Both Q and S react with cold water to produce hydrogen gas.
(i) Which element reacts more vigorously ?
………………………………………..........................................................................
[1 mark]
(ii) Write the balanced chemical equation for the reaction in c(i).
…………………………………………......................................................................
2. [1 mark]
d) When U dissolves in water, it produces a mixture of two acids.
(i) Write the formulae for these two acids.
…………………………………………………………………………………….
[1 mark]
(ii) Describe the observation obtained when a piece of litmus paper is immersed in the
mixture of two acids?
……………………………………………………………………………………..
[1 mark]
e) P can react with R to produce a liquid. Name the liquid.
………………………………………………………………………………………...
[1mark]
f) Classify the elements P, Q, R, S, T and U into metals and non-metals.
Type of element Elements
Metal
Non-metal
[2 marks]
3. JAWAPAN
1 (a)
1 2 1 1 1 1 1 1
3 4 5 6 7 8
1 P T
2 R
3 Q U
4 S
5
1+1+1
6
(b) T 1
1
(c)(i) S 1
(ii) 2Q + 2H2O 2QOH + H2 // 2S + 2H2O 2SOH + H2 1
2
(d)(i) HU dan HUO atau HCl dan HClO/HOCl 1
(ii) Warna kertas litmus dilunturkan/biru / merah menjadi putih 1
2
(e) Air 1
1
(f) Logam: Q, S
Bukan logam: P, R, T, U
Catatan : Semua betul – 2 markah
Mana-mana 4 betul – 1 markah 2
JUMLAH 11
4. 2. Figure 1 show a part of the periodic table.
1 2 13 14 15 16 17 18
1
2 P Q
3 R S T
4
5
6
Figure 1
Based on the Figure 1, answer the following questions.
(a) What is the element represented by P?
............................................................................................ (1 marks)
(b) On the figure above, mark X in the box for an alkali metal
........................................................................................... (1 marks)
(c) State one characteristic of element U.
.......................................................................................... (1 marks)
(d) Write the electron arrangement for S.
......................................................................................... (1 marks)
(e) (i) Which element is not chemically reactive?
.................................................................................. (1 marks)
(ii)State one application of the element in (e)(i)
................................................................................. (1 marks)
(f) (i) Write the chemical equation for the reaction between R and Q
................................................................................. (1 marks)
(ii)State briefly the transfer of electron which occur during the reaction
between R and Q.
..........................................................................................
......................................................................................... (2 marks)
JAWAPAN
1 (a) Carbon 1
(b) (any box in column for group 1) 1
(c) Form coloured compounds 1
(d) 2.8.7 1
(e) (i) T 1
(ii) Fill electric bulb 1
(f) (i) 2R + Q2 2RQ 1
(ii) - R release two electrons to Q 1
- Q receive two electron from R 1
9
5. ESSAY QUESTION
1 (a) Figure below shows the positions of elements Na, P and Cl in the Periodic
Table of Elements.
1 2 13 14 15 16 17 18
1
2
3 Na P Cl
4
5
6
i. Arrange the element, Na, P and Cl according to the size of the atoms that
decrease. Explain your answer. (5 marks)
ii. Arrange the elements Na, P and Cl following their increasing
electronegativity. (4 marks)
iii. State two chemical properties of sodium.
Show the reaction involved. (7 marks)
(b) “Iron is a transitional element.”
State the properties that support the above statement. (4 marks)
JAWAPAN
1 (a) (i) - Na, P, Cl
Decreasing in the size of the atom 1
- Every atom of the element Na, P
and Cl have 3 shell with 1
electrons.
- The nuclear positive charge
increase as the period moves from
left across to the right period. 1
- Therefore the pulling force of the
nucleus on the electrons of the
three shells become stronger from
6. Na, P and Cl. 1
- Because of this, the size of the
atom decrease from Na, P to Cl. 1
(ii) - Na,P,Cl
Increasing electronegativity 1
- The nuclear positive charge
increase from Na to Cl. 1
- The sizeof the atom becomes
smaller from Na to Cl. 1
- Because of its strength, the
nucleus can attract more electrons
by Na to Cl. 1
(iii) 1.Reaction with water
- Sodium react actively with water
and produces a loud pop sound. 1
- A solution which turns red litmus
paper blue is produced. 1
- Equation of the reaction :
2Na + 2H2O 2NaOH + H 1
2. Reaction with oxygen
- Sodium burns quickly with a
bright yellow flame. 1
- A white solid is produced and
dissolves in water. The solution
turns red litmus blue. 1
- Equation of the reaction :
4Na + O2 2Na2O 1
Na2O + H2O 2NaOH 1
(b) - Iron forms a coloured compound
e.g. ferric(III) chloride, which is
reddish brown in colour. 1
- Iron has different oxidation
number. 1
Example: The oxidation number
of iron in ferrous(II) chloride is
+2 while in ferric(III) chloride is
+3. 1
- Iron can form complex ions e.g.
ion [Fe(CN)6]4- 1
20