1.
, anything that has mass and takes up space
2.
, the smallest unit of an element
3.
, two or more atoms joined together
4.
, a pure substance made of one type of atom
5.
, a substance made of two or more elements chemically combined
6.
, a push or pull on an object
7.
, a change in position over time
8.
, speed in a certain direction
9.
,the rate at which velocity changes
10.
, the force that pulls objects toward each other
11.
, a force that slows motion between surfaces rubbing together
12.
, the ability to do work
13.
Energy , energy of motion
14.
Energy , stored energy
15.
, a measure of how hot or cold something is
16.
, the amount of mass in a certain volume
17.
, the amount of matter in an object
18.
, the amount of space an object takes up
19.
Reaction , a process where substances change into new substances
20.
, the flow of electric charges
