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Nelson land chemistry test
n/a
21
Chemistry
8th Grade
01/09/2010

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Term
matter
Definition
Anything that takes up space
Term
chemistry
Definition
the study of what makes up matter and how it changes
Term
chemical change
Definition
any change that changes the chemical makeup of something
Term
physical change
Definition
a change of what matter looks like. change in state

change in shape
breaking of solid
change in size
Term
subscripts
Definition
how many of each atom there are
Term
coefficients
Definition
how many of each molecule there is
Term
chemical reactions
Definition
a change in the mollecular structure of a substance
Term
precipitate
Definition
the solid that comes from a chemical reaction
Term
endothermic reaction
Definition
a reaction where the substance takes in heat
Term
exothermic reaction
Definition
a reaction in which the substance releases heat
Term
chemical bonds
Definition
any interaction between chemicals that creates a new compound
Term
combustion
Definition
the process of burning something
Term
product
Definition
what is made from a chemical reaction
Term
reactants
Definition
what there is before a chemical reaction, what reacts
Term
chemical equations
Definition
a written out description of a chemical reaction
Term
catalyst
Definition
a substance that increases the rate of a chemical reaction without itself going under a chemical change
Term
inhibitor
Definition
something that slows down a chemical reaction without itself undergoing a chemical change
Term
solution
Definition
a liquid mixture in which the minor component (the solute) is uniformly distributed (dissolved) within the major component (the solvent)
Term
name the four types of chemical reactions
Definition
single replacement, double replacement, synthesis, decomposition
Term
what are the diatomic molecules
Definition
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, Iodine
Term
What is a diatomic molecule
Definition
A molecule composed of two of the same atoms.
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