Chapter 2 Terms

Question 1

Anything that takes up space and has mass

Answer 1

Matter

Question 2

The amount of material in matter

Answer 2

Mass

Question 3

Studies structure of matter

Answer 3

Chemistry

Question 4

Smallest stable unit of matter

Answer 4

Atom

Question 5

Larger complex structures when atoms interact. Share pairs of electrons.

Answer 5

Molecules

Question 6

Substance composed only of atoms with the same atomic number

Answer 6

Element

Question 7

Complete atoms are electrically

Answer 7

Neutral

Question 8

Some atoms become ____ by giving away or receiving electrons to become more stable

Answer 8

Ions

Question 9

Atoms with unfilled outer shells

Answer 9

Reactive

Question 10

Complete outer shell

Answer 10

Inert

Question 11

Form when atoms interact to stabilize outer energy levels

Answer 11

Chemical bonds

Question 12

Movement of an object or change in physical structure of matter

Answer 12

Work

Question 13

Producing complex molecules (protein synthesis).. moving material into or out of a cell

Answer 13

Cellular work

Question 14

Capacity to perform work

Answer 14

Energy

Question 15

Allows precise and brief description of complex events

Answer 15

Chemical notation

Question 16

Proteins that help lower activation energy and mediate reactions

Answer 16

Enzymes

Question 17

Enzymes function as

Answer 17

Catalysts

Question 18

Term for decomposition reactions: breaking of covalent bonds releases energy to do work

Answer 18

Catabolism

Question 19

Term for synthesis reactions: energy released by catabolic reactions used to form covalent bonds in new molecules

Answer 19

Anabolism

Answer 20

Aqueous solutions

Question 21

Medium in which atoms, ions, or molecules are dispersed.

Answer 21

Solvent

Question 22

The dispersed substances

Answer 22

Solutes

Question 23

Process of breaking ionic bonds as ions interact with pikes of water molecule

Answer 23

Ionization (dissociation)