Question

section: chemical properties
chemical properties

1. the property of matter that describes its ability to change into new matter with different properties is known as a

a. chemical change.
c. chemical property.
b. physical change.
d. physical property.

1. the chemical property that describes the ability of two or more substances to combine to form new substances is called

a. reactivity.
c. density.
b. flammability.
d. solubility.

1. the ability of a substance to burn is a chemical property known as

a. reactivity.
c. density.
b. flammability.
d. solubility.

1. an iron nail is reactive with

a. rubbing alcohol.
b. other iron nails.
c. wood in a house.
d. oxygen in the air.

1. which of the following statements is true about characteristic properties of matter?

a. characteristic properties depend on the size of the sample.
b. characteristic properties may be either physical or chemical properties.
c. characteristic properties involve only chemical properties.
d. characteristic properties involve only the physical nature of the matter.

1. describe the ways that burning changes the nature of wood.
2. a substance always has ______________ properties, even though they are difficult to observe.
3. scientists use ______________ properties to help them identify and classify matter.

Explanation:

1. A chemical property is the ability of matter to change into new matter with different properties.
2. Reactivity is the chemical property of substances to combine and form new substances.
3. Flammability is the ability of a substance to burn.
4. Iron nails react with oxygen in the air to form rust.
5. Characteristic properties can be physical or chemical and don't depend on sample - size.
6. Burning wood is a chemical change. It combines with oxygen, releases heat and light, and forms ash and gases like carbon dioxide.
7. A substance always has chemical properties which might be hard to observe.
8. Scientists use characteristic properties to identify and classify matter.

Answer:

1. c. chemical property
2. a. reactivity
3. b. flammability
4. d. oxygen in the air
5. b. Characteristic properties may be either physical or chemical properties.
6. Burning wood is a chemical change. It combines with oxygen, releases heat and light, and forms ash and gases like carbon dioxide.
7. chemical
8. characteristic