Physical vs Chemical

Question 1

Sodium hydroxide dissolving in water

Answer 1

Physical Change

Question 2

Hydrochloric acid reacting with potassium hydroxide to produce a salt, water, and heat

Answer 2

Chemical Change

Question 3

A pellet of sodium is sliced into two

Answer 3

Physical Change

Question 4

Water is heated and changed to steam

Answer 4

Physical Change

Question 5

A sodium pellet catching on fire as hydrogen gas is liberated and sodium hydroxide forms

Answer 5

Chemical

Question 6

Potassium chlorate decomposes to potassium chloride and oxygen gas

Answer 6

Chemcical

Question 7

Iron rusting

Answer 7

Chemical

Question 8

Evaporation

Answer 8

Physical

Question 9

Wood rotting

Answer 9

Chemical

Question 10

Ice melting

Answer 10

Physical

Question 10

Milk sours

Answer 10

Chemical

Question 11

Pancakes cooking on a griddle

Answer 11

Chemical

Question 11

Sugar dissolving in water

Answer 11

Physical

Question 12

A tire inflating with air

Answer 12

Physical

Question 12

Grass growing in a lawn

Answer 12

Chemical

Question 13

Food digesting in the stomach

Answer 13

chemical

Question 13

water absorbed by paper towel

Answer 13

physical

Question 14

Blue color

Answer 14

Physical Property

Question 15

Density

Answer 15

Physical Property

Question 16

Flammability

Answer 16

Chemical Property

Question 17

Solubility

Answer 17

Physical Property

Question 18

1.

Reacting with acids to form gas

Answer 18

Chemical property

Question 19

Supports combustion (burning)

Answer 19

Chemical Prop

Question 20

Sour taste

Answer 20

Phys Prop

Question 21

Melting Point

Answer 21

Phys Prop

Question 22

Reacts with water to form gas

Answer 22

Chem Prop

Question 23

Odor

Answer 23

Phy Prop

Question 24

Reacts with base to form water

Answer 24

Chem Prop

Question 25

Hardness

Answer 25

Phy Prop

Question 26

Boiling Point

Answer 26

Phy prop

Question 27

Neutralize base

Answer 27

Phy Prop

Question 28

Luster

Answer 28

Phy Prop