Chapter 2 Terms

Question 1

anything that takes up space and has mass.

Answer 1

Matter

Question 2

a unit of matter that cannot be further broken down by chemical means; it is composed of subatomic particles, which protons (positively charged paricles) neutrons (with no charge), and electrons (with negative charges).

Answer 2

Atom

Answer 3

Proton

Answer 4

Neutron

Answer 5

Electron

Question 6

any substance that cannot be broken down into simpler substances by ordinary chemical means.

Answer 6

Element

Question 7

the number of protons in the nucleus of an atom.

Answer 7

Atomic Number

Question 8

any atom equals the number of protons plus the number of neutrons

Answer 8

Atomic Mass/Weight

Question 9

atoms that have the same number of protons but different numbers of neutrons.

Answer 9

Isotope

Question 10

isotopes that are unstable and spontaneously decay, emmitting radiation in the form of gamma rays and alpha and beta particles.

Answer 10

Radioisotope

Question 11

a molecule that contains two or more different elements.

Answer 11

Compound

Answer 12

Chemical Bond

Answer 13

Covalent Bond

Answer 14

Molecule

Answer 15

Ionic Bond

Answer 16

Anion

Answer 17

Cation

Answer 18

Electrolyte

Answer 19

Salt