Question 1

are properties that can be observed without changing the appearance of an object

Accepted Answer

physical properties

Question 2

have a definite volume but not shape

Accepted Answer

liquids

Question 3

have no definite shape or volume

Accepted Answer

gases

Question 4

is the measure of the average kinetic energy of that object

Accepted Answer

temperature

Question 5

the temperature where a liquid becomes a solid

Accepted Answer

freezing point

Question 6

the temperature where a solid becomes a liquid

Accepted Answer

melting point

Question 7

the ability of a substance to combine with or change into one or more substances

Accepted Answer

chemical properties

Question 8

how easily one substance reacts with another substance

Accepted Answer

reactivity

Question 9

make blue litmus paper pink or red

Accepted Answer

acids

Question 10

make red litmus paper blue

Accepted Answer

bases

Question 11

acid

Accepted Answer

ph of 6 or less

Question 12

base

Accepted Answer

ph of 8 or more

Question 13

the combination of an acid and base

Accepted Answer

neutralization

Question 14

produced in a neutralization reaction

Accepted Answer

salt

Question 15

Definite shape and volume

Accepted Answer

solids

Question 16

some molecules escape just below boiling point

Accepted Answer

liquids evaporate when

Question 17

a solid changes directly to a gas

Accepted Answer

sublimation occurs when

Question 18

solid to liquid

Accepted Answer

change of state that releases energy

Question 19

the ability of a substance to combine with and form new substances

Accepted Answer

chemical property

Question 20

particles move faster

Accepted Answer

when temperature increases

Question 21

the ability of an object to burn or not burn

Accepted Answer

flammabilty

Question 22

the way a substance will combine (or not combine) with another substance

Accepted Answer

reactivity of a substance

Question 23

always moving

Accepted Answer

particle are

Question 24

require energy (must be added)

Accepted Answer

melting and vaporizing

Question 25

give off energy (energy is lost)

Accepted Answer

freezing and condensing

Question 26

are very close together and cannot move

Accepted Answer

particles in a solid

Question 27

are close together but can still slide past each other

Accepted Answer

particles in a liquid

Question 28

are very far apart and can move freely

Accepted Answer

particles in a gas

Question 29

lower than 7

Accepted Answer

acids have a ph

Question 30

higher than 7

Accepted Answer

bases have a ph

Question 31

sour

Accepted Answer

acids taste

Question 32

bitter

Accepted Answer

bases taste

Question 33

can burn your skin

Accepted Answer

if you touch an acid it can

Question 34

your tissue

Accepted Answer

a base can damage

Question 35

cleaning products

Accepted Answer

bases are mostly used in

Question 36

form when an acid and base react

Accepted Answer

salts

Question 37

7

Accepted Answer

water has a ph of

Question 38

a ph of 7

Accepted Answer

neutral items have

Question 39

lemon juice

Accepted Answer

an example of an acid is

Question 40

ammonia

Accepted Answer

an example of a base is

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