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Final Exam Review
Final Exam Review

... b. Kinetic energy of water molecules increases when the heated metal is immersed. c. Kinetic energy of water molecules decreases when the heated metal is immersed. d. Kinetic energy of metal atoms increases when immersed in the cooler water. 2. The gases helium, neon, and argon are in separate conta ...
Chapter 2 Lecture notes
Chapter 2 Lecture notes

... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
Unit 1: Sig. Figs, Compounds, Elements, Homo/Hetero mixtures
Unit 1: Sig. Figs, Compounds, Elements, Homo/Hetero mixtures

... 1. Which of the following gases does not exist in nature as a diatomic molecule? a. Nitrogen b. Helium c. Hydrogen d. oxygen 2. Ionic compounds generally form: a. Liquids b. Gases c. Crystals d. molecules 3. In metallic bonding, the valence electrons of all atoms are shared in: a. A nonpolar covalen ...
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Chapter 6. Electronic Structure of Atoms
Chapter 6. Electronic Structure of Atoms

... Be able to calculation various Energy transitions between two energy levels. Be able to write electronic structure both long & short-cut forms, Energy level diagram, and identifications by structures including atoms and ions Be able to recognize valence electrons, those mostly involved in gain & los ...
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... those of the noble gases (e.g. helium, neon and argon), which take part in few chemical reactions. Atoms chemically bond with other atoms in order to achieve the stable electronic configuration of a noble gas. This can be achieved by either: (i) transferring electrons (ionic bonding) to form positi ...
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Introduction to Chemical Reactions

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... 21) At STP, the liquids on the Periodic Table are Br and Hg. The gases are N, Cl, H, O, F and the Noble Gases. All other elements are solids. [Periodic Table] a) Which element on the Periodic Table is a nonmetallic liquid at STP?___bromine (Br)___ b) Which element at STP is a liquid that conducts e ...
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Energy Level Models - Middle School Chemistry

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ELECTRIC CURRENT IN LIQUIDS

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Syracuse University

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... 21) At STP, the liquids on the Periodic Table are Br and Hg. The gases are N, Cl, H, O, F and the Noble Gases. All other elements are solids. [Periodic Table] a) Which element on the Periodic Table is a nonmetallic liquid at STP?___bromine (Br)___ b) Which element at STP is a liquid that conducts e ...
Average Atomic Mass
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... 25. water Classify the following as A/F. mixture or B/G. pure substance. 26. a multivitamin tablet 27. distilled water 28. tap water Classify the following as A/F. homogeneous mixture or B/G. heterogeneous mixture. 29. chunky peanut butter 30. a solution of copper (II) sulfate 31. a bag of trail mix ...
Regents Exam In Chemistry Review Homework #1
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... 11) Explain how a photon of light is formed:____________________________________________________________ ______________________________________________________________________________________________ ...
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Final Exam Practice Questions for General Chemistry NOTICE TO

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Document
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... anions and cations are separated from each other. This is called dissociation. Na2S(aq)  2 Na+(aq) + S2–(aq) When compounds containing polyatomic ions dissociate, the polyatomic group stays together as one ion. Na2SO4(aq)  2 Na+(aq) + SO42−(aq) When strong acids dissolve in water, the molecule ion ...
Old EXAM I - gozips.uakron.edu
Old EXAM I - gozips.uakron.edu

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... Sample Problem 21.2: The pH of a Base Sodium hydroxide is a strong base. Find the pH of a solution prepared by dissolving 1.0 g of NaOH into enough water to make 1.0 L of solution. Step 1: List the known values and plan the problem. Known mass of NaOH = 1.0 g molar mass of NaOH = 40.00 g/mol volume ...
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Wizard Test Maker

... (2) propanal (4) water 6856 Which Group 14 element is classified as a metal? (1) carbon (3) silicon (2) germanium (4) tin 6763 An element that has a low first ionization energy and good conductivity of heat and electricity is classified as a (3) nonmetal (1) metal (2) metalloid (4) noble gas 6709 A ...
National 5 Unit 1 Homework Booklet
National 5 Unit 1 Homework Booklet

... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
Homework Booklet Unit 1 Feb14
Homework Booklet Unit 1 Feb14

... (c) Name the two pollutant gases changed by the catalyst and describe what they are changed into. 4. Explain why solid citric acid does not conduct electricity yet when it dissolves in water it does conduct. 5. Electrolysis of acids can be used to confirm the presence of hydrogen ions. (a) At which ...
Lesson 9 Review Teacher`s Copy
Lesson 9 Review Teacher`s Copy

... 3. Matter is made up of particles whose properties determine the observable characteristics of matter and its reactivity. (22) 3.2. Use atomic and molecular models to explain common chemical reactions. (22) 3.2.d. An oxidation-reduction (redox) reaction involves the transfer of electrons (e-). (4) 3 ...
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Paper - Revision Science

... D it cannot be poisoned. (Total for Question 12 = 1 mark) 13 In the reaction of benzene with chloromethane, aluminium chloride is added because it reacts with A benzene to produce an electrophile. B benzene to produce a nucleophile. C chloromethane to produce a nucleophile. D chloromethane to produc ...
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Ion

An ion (/ˈaɪən, -ɒn/) is an atom or a molecule in which the total number of electrons is not equal to the total number of protons, giving the atom or molecule a net positive or negative electrical charge.Ions can be created, by either chemical or physical means, via ionization. In chemical terms, if a neutral atom loses one or more electrons, it has a net positive charge and is known as a cation. If an atom gains electrons, it has a net negative charge and is known as an anion. An ion consisting of a single atom is an atomic or monatomic ion; if it consists of two or more atoms, it is a molecular or polyatomic ion. Because of their electric charges, cations and anions attract each other and readily form ionic compounds, such as salts. In the case of physical ionization of a medium, such as a gas, what are known as ""ion pairs"" are created by ion impact, and each pair consists of a free electron and a positive ion.
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