Unit 4: The Chemistry of Materials

A ________________ is a substance or mixture of substances that make up an object.

• natural resource

• material

• physical property

Some examples of materials include:

• metals

• plastics

• glass

• wood

• ceramics

_____________________ are properties that can be observed without changing the identity of the material.

• Physical Properties

• Natural Resources

• Chemical Properties

____________________ describe a material's ability to undergo chemical reactions and form new substances.

• Physical Properties

• Chemical Properties

Reactivity describes how a material reacts with another substance.

• True

• False

A ____________________ us matter that is composed of only one type of basic particle.

• chemical properties

• physical properties

• pure substance

The chemical makeup of a material affects its chemical and physical properties.

• True

• False

A _________________________ is a substance, material, object, or source of energy that is found in nature and is useful or valuable to humans.

• mixture

• chemical properties

• natural resource

• non-living resource

Graphite is a form of pure carbon found in nature.

• True

• False

___________________ are human-made materials that are produced using natural or synthetic materials.

• Natural materials

• Synthetic materials