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ICP review of chemistry semester 2

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  • If a certain atom has 32 protons, 32 electrons and 34 neutrons, what is the mass number?
    66
  • Archimedes' Principle determines whether an object will sink or __
    float
  • When one element replaces another element in a compound the reaction is which type?
    single displacement
  • The particles of a solid will move the slowest and the particles that make up _____ move the fastest.
    gas
  • What is an insoluble compound that forms during a chemical reaction?
    precipitate
  • ____ ____ is the theoretical point at which all molecular motion stops.
    Absolute zero
  • The metal, mercury, and nonmetal, bromine, are the only two elements on the periodic table that exist at room temperature as ___
    liquids
  • Most matter expands when
    heated
  • The elements in groups 3 through 12 of the periodic table are the _ elements.
    Transition
  • A fluid's resistance to flow is __
    viscosity
  • __ can be used as a wire because they are ductile
    Metals
  • An ionic bond is formed when electrons are _ between atoms.
    transferred
  • A substance that __ __ a chemical reaction is called a catalyst.
    speeds up
  • Compared to most substances, water is unusual because it__ when it goes from liquid to solid state.
    Expands
  • An atom with 8 ____ in the outermost energy level is chemically stable
    electrons
  • The __ __ are in group 18 on the periodic table
    noble gases
  • If heat must be added to a chemical reaction, then the reaction is __
    Endothermic
  • the amount of energy needed to change a material from a liquid to a __ is the heat of vaporization.
    gas
  • The reaction of hydrogen gas with oxygen gas to produce water can be classified as a synthesis or ___ reaction.
    combustion
  • The scattering of ___ by colloids is called the Tyndall effect.
    light
  • Solution is another name for a ___ mixture.
    homeogeneous
  • A chemical bond that occurs between two non metals that __ electrons is a covalent bond.
    share
  • A decomposition reaction produces two new substances with masses of 28 grams and 32 grams respectively. What was the mass of the reactant?
    60 grams
  • What is the correct formula for calcium oxide
    CaO
  • A period on the periodic table is a ___ row.
    horizontal
  • What is the correct name for the compound KCl?
    potassium chloride
  • Graphite, diamond and the buckminster fullerene are three __ of the element carbon.
    allotropes
  • The sum of the oxidation numbers in a neutral compound is always ____.
    zero
  • Boiling water is an example of a __ change
    physical
  • The substance(s) on the ___ side of the arrow in a chemical equation is a reactant.
    Left
  • The formation of ammonium chloride from hydrochloric acid and ammonia is an example of a ___ reaction.
    synthesis
  • Atoms of the same element with different numbers of __ are called isotopes
    neutrons
  • As the volume of a gas increases, the pressure will ____ if the temperature remains constant
    decrease
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