Matter Changes 2

when you create a new substance.

when you do not create a new substance.

when you alter the color of the substance.

when you change the appearance of the substance.

when you create a chemical reaction.

It is true because you can reverse water to become ice again.

It is false because you cannot get ice as it was before.

It is false because you can get the ingredients out of a cake.

we create a chemical change.

we can have the substance as it was before.

the odor changes creating a new substance.

It is true because we cannot have the ingredients as they were before.

It is false because boiling water is a physical change.

It depends because when applying heat, then it is a chemical change.

It is true because without it, you would not have fire.

It is false because carbon dioxide is used when burning a substance.

True

False

it becomes ashes.

its color changes.

its odor changes.

we get heat from it.

carbon in the wax reacts with oxygen.

oxygen and carbon in the wax forms carbon dioxide and water vapor (gas).

it is melted by the heat.

consists of methane.

can be used as fuel.

is used for physical and chemical changes.

needs carbon dixide to be produced.

True

False

you have a physical change.

you create a chemical reaction.

you can observe bubbles of carbon dioxide gas.

water and cement.

soda and water.

helium and water.

concrete.

houses.

casts to support broken bones.