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36 Cards in this Set
- Front
- Back
What characterizes a chemical reaction as combustion?
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Addition of O2
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What is th charge on potassium in the compound KCI?
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+1
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How many electrons does an oxygen ion have?
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10
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How many neutrons does an atom of carbon-14 contain?
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8
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What is the strongest type of chemical bond?
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Covalent Bond
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What is the mass of one mole of carbon Dioxide?
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44 g/mol
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How many molecules are present in 2 moles of O2?
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1.204 x 1024
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How many moles of CO2 will be produced from the reaction of 3 moles of acetylene with excess oxygen?
2C2H+5O---4CO2+2H2O |
6 moles
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What would be the oxidation state of the sulfur atom in sulfuric acid H2SO4?
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+6
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What is the correct electron configuration for neon?
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Is22s22p6
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What is the ground state electron configuration for zinc?
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1s22s22s63s23p64s23d10
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What is the correct name of MgSO4?
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Magnesium sulfate
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What is the correct formula for magnesium chloride?
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MgCl2
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Phenolphthalein changes from colorless to pink in basic solutions. At what pH value would the solution remain colorless?
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8.4
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Iodine and carbon dioxide undergo sublimation at room temperature and atmospheric pressure. What is the process?
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Changing from solid to a gas.
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A catalyst increases the rate of reaction by?
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Lowering the activation energy.
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Redox reactions are those that occur with a transfer of electrons. What would cause an increase in the oxidation number?
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Oxidation
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Chemical reactions in lilving systems proceed along catabolic pathways and there tends to be an increase in?
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Entropy
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Which outcome measure would most likely indicate that a sample of water contains acid?
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pH
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Three states of matter?
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Solid, Liquid and Gas
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What are the 2 types of mixtures?
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Homogeneous and Heterogenous
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What is a physical change?
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No change has been made to the chemical composition.
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What is an element?
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The simplest of substances and is represented by specific letter of combination of letters.
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Where can elements be found?
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Perodic Table - elements asre arranged according to their chemical properties on the table.
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What are compounds?
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They are combinations of elements in whole number ratios.
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What is a chemical reaction?
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It is the breaking of bonds and the reforming of new bonds to create new chemical compounds with different chemical properties.
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What does the atom consist of?
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protons, neutrons, and electrons.
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Protons have a negative or positve charge?
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Positive
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Nuetrons have what charge?
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No charge
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Electrons have what charge?
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Negative
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The nucleus contains what?
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Protons and Neutrons
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Where are electrons located?
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In orbitals surrounding the nucleus.
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What is radioactivity
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Describes the emission of particles from an unstable nucleus.
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What are the 2 types of chemical bonding?
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Ionic Bond - electrostatic attraction between 2 oppositely charged ions - metals and non-metals.
A single covalent bond is formed when 2 atoms share a pair of electorns. |
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What is the strongest type of chemical bond?
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Covalent Bond
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What does Hydrogen Bonds involve?
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Fluorine, chlorine, oxygen and nitrogen.
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