Matter
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. Heat
A. A push or a pull
2. Light
B. A quantum of electromagnetic radiation
3. Energy
C. The smallest component of an element having the chemical properties of the element
4. Kinetic
D. The difference in electrical charge between two points in a circuit expressed in volts
5. Potential
E. The power to do work or make things move
6. Chemical
F. Distance travelled per unit time
7. Atomic
G. How much matter something contains
8. Atom
H. How tightly packed the matter in something is
9. Molecule
I. Force that pulls objects toward the Earth
10. Photon
J. An elementary particle with 0 charge and mass about equal to a proton
11. Radiation
K. A piece of photographic film showing an image with light and shade or colors reversed
12. Electron
L. Center of an atom or a cell
13. Proton
M. The absence of matter
14. Neutron
N. Energy that travels in waves or particles
15. Density
O. Substance used in or made by chemistry
16. Mass
P. Of or relating to or comprising atoms
17. Gravity
Q. Energy that makes things warm
18. Weight
R. The vertical force exerted by a mass as a result of gravity
19. Vacuum
S. The simplest structural unit of an element or compound
20. Nucleus
T. What lets us see; the opposite of dark
21. Positive
U. Relating to the motion of material bodies and the forces associated therewith
22. Negative
V. Hopeful and optimistic; the opposite of negative
23. Force
W. An elementary particle with negative charge
24. Velocity
X. A stable particle with positive charge equal to the negative charge of an electron