Chapter 2

Question 1

product

Answer 1

In front of arrow

Resulting from rxn

Question 2

reactant

Answer 2

behind arrow

Substance that e gets into a rxn

Question 3

Matter

Answer 3

has mass and occupies space

Question 4

atomic mass

Answer 4

amount of atoms

Question 5

neutral

Answer 5

7

H+ and OH- are equal

Question 6

electrons

Answer 6

negative charge

Question 7

synthesis rxn

Answer 7

add together

Question 8

base

Answer 8

8-14
more OH- molecules
Proton accepter

Question 9

acid

Answer 9

1-6
more H+ molecules
Proton donor

Question 10

Properties of water

Answer 10

cohesive and adhesive
liquid at room temp
temp change is slow
high heat of vaporization
frozen is dense

Question 11

compund

Answer 11

2 or more diff atoms combined

Question 12

buffers

Answer 12

used to inhibit drastice change in pH

A chemical that resists changes in ph when either an acid or a base is added to a solution containing the buffer in

Question 13

pH scale

Answer 13

acid
base
neautral

Question 14

diatomic

Answer 14

N2, O2, Br2, F2, Cl2, I2, H2

Question 15

hydrophilic

Answer 15

likes water

Question 16

ionic bond

Answer 16

transfer electrons

Question 17

hydrophobic

Answer 17

afraid of water

Question 18

log rhythmic

Answer 18

each time you change direction it is 10 times greater

Question 19

protons

Answer 19

positive charge

Question 20

weight

Answer 20

determined by gravity

Question 21

exchange rxn

Answer 21

Combo of synthesis and decomposition

Question 22

isotopes

Answer 22

element with a different number of neutrons

Question 23

hydrogen bonds

Answer 23

an attraction between the positive and negative poles of charged atoms

Question 24

dot diagram

Answer 24

shortcut to drawing

Question 25

valance shell

Answer 25

outermost shell

Question 26

octet rule

Answer 26

1st level can hold 2 electrons and every other can hold 8

Question 27

mass

Answer 27

does not change

amount of matter

Question 28

molecules

Answer 28

2 or more atoms combined

Question 29

neutrons

Answer 29

atomic mass-atomic #

neutral charge

Question 30

ions

Answer 30

charged atom

Question 31

chemical symbol

Answer 31

letters representing substance

Question 32

decomposiiton rxn

Answer 32

break down

Question 33

covalent bond

Answer 33

sharing electrons

Question 34

elements

Answer 34

the simplest form of a substance