1.
a new substance is created in a ____ change
2.
no new substance is created in a ____ change
3.
anything that has mass and takes up space
4.
single unit of an element
5.
made of only 1 type of atom
6.
2 or more atoms bonded together
7.
2 or more elements bonded together
8.
mixture that is the same throughout
9.
mixture that is not the same (different)
10.
a mixture in liquid (usually water)
11.
letters and numbers that represent atoms in compounds
12.
the starting substances of a chemical reaction
13.
the ending substances of a chemical reaction
14.
when the number of atoms before and after are equal
15.
a chemical ____ is like a math problem with reactants and products
16.
the law of ____ of mass means there are the same amount of atoms on each side
17.
when a gas is produced in a reaction, you see ____
18.
another name for a solid produced in a chemical reaction
19.
in a chemical reaction, a change in ____ can be observed by a change in temperature or light
