Particle Theory, Atoms, Elements
Name: ______________________ Date: ____________
Write the letter of the matching definition next to each term.
1. atom
A. An elementary particle with 0 charge and mass about equal to a proton
2. bond
B. A stable particle with positive charge equal to the negative charge of an electron
3. charge
C. An electrical force linking atoms
4. electron
D. Center of an atom or a cell
5. neutron
E. The smallest component of an element having the chemical properties of the element
6. proton
F. Ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile (plural)
7. nucleus
G. A tiny piece of anything
8. shells
H. The simplest structural unit of an element or compound
9. molecule
I. An elementary particle with negative charge
10. element
J. A particle that is electrically charged
11. matter
K. Any of several chemical elements that are usually shiny solids that conduct heat or electricity
12. ion
L. Any of the chemically inert ___ elements of the helium group in the periodic table
13. particle
M. An impetuous rush toward someone or something
14. orbit
N. An abstract part of something
15. metal
O. An area in which something acts or operates or has power or control: "the range of a supersonic jet"
16. noble gas
P. That which has mass and occupies space