Chemical & Physical Changes & Properties

Front 1

What must be formed for a chemical change to have occurred?

Back 1

A new substance

Front 2

Some evidence that a new substance MIGHT have been formed are...

Back 2

color change
gas or solid formed
large amount of energy released

Front 3

Solid to liquid; liquid to gas; gas to solid; solid to gas; All these are ____ changes

Back 3

physical or state changes

Front 4

All state changes are ___ changes

Back 4

physical

Front 5

What kind of change is boiling of water

Back 5

physical

Front 6

What kind of change is melting or freezing?

Back 6

physical

Front 7

Silver nitrate & salt water instantly form a white solid when reacted. This is a ___ change.

Back 7

chemical

Front 8

Melting & re-freezing of lead is a ____ change.

Back 8

physical

Front 9

Copper wire put into some silver nitrate turns the copper into silvery flecks and the liquid turns blue. This is a ___ change.

Back 9

chemical

Front 10

Steel wool catches fire when touched to a battery. This is a ___ change

Back 10

chemical

Front 11

Dissolving of salt into water makes salt water. This is a ___ change.

Back 11

physical

Front 12

Igniting methane gas is a___ change

Back 12

chemical

Front 13

Evaporating the water out of salt water is a ____ change.

Back 13

physical

Front 14

An iron paper clip put into some copper II sulfate causes a reddish-brown material to form on the iron and the liquid to lose its blue color. This is a ___ change.

Back 14

chemical

Front 15

Magnetic Iron with sulfur make a non-magnetic product when the two are cooked strongly together. This is a ____ change.

Back 15

chemical

Front 16

Iron rusting is a ___ change.

Back 16

chemical

Front 17

Baking soda with vinegar generate lots of a gas that easily inflate a balloon. This is a ___ change.

Back 17

chemical

Front 18

When potassium is put into water, it catches fire. This is a ___ change.

Back 18

chemical

Front 19

Vinegar has a strong odor and is clear and is a liquid at room temperature. These are ___ properties.

Back 19

physical

Front 20

Silver is a shiny metal with a density of about 10.5 g/mL and it conducts heat and electricity well. These are ___ properties.

Back 20

physical

Front 21

Vinegar turns litmus paper red. This is a ___ property.

Back 21

chemical

Front 22

Corn starch makes a huge flame when sprayed into a burner flame. This is a ___ property.

Back 22

chemical

Front 23

Eggs tarnish silver. This is a ___ property of silver.

Back 23

chemical

Front 24

Paper is flammable. This is a ____ property of paper.

Back 24

chemical

Front 25

Acid corrodes most metals. This is a ___ property.

Back 25

chemical

Front 26

The ability to dissolve in water is a ___ property.

Back 26

physical

Front 27

Solubility is a ___ property

Back 27

physical

Front 28

Density is a ___ property.

Back 28

physical

Front 29

Flammability is a ___ property.

Back 29

chemical

Front 30

Malleability and ductility (flattenability and stretching) are ____ properties.

Back 30

physical

Front 31

An Alka Seltzer in water produces ____ change.

Back 31

chemical

Front 32

Photosynthesis in a plant is a ____ change.

Back 32

chemical

Front 33

Respiration in an organism is a ___ change.

Back 33

chemical

Front 34

Baking a cake has a ___ change occurring in it.

Back 34

chemical

Front 35

Evaporation of gasoline vapors is a ___ change.

Back 35

physical

Front 36

Combustion of gasoline is a ___ change.

Back 36

chemical