UNIT 8. MATTER

What is matter?Matter is everything we can see, touch or

smell that has a mass or volume.

Matterhas

Mass VolumeIt is how much

matter and object has.

It is the amount of space that an

object has.

What are the 3 states of matter?

Some solids can change their shape with a small force.

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Types of changes

Physical Chemical The same substance

change its state.They are reversed.

A new substance is produced. They are not

reversed.

More examples of chemical changes…

Physical changes in matter

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What is a mixture?A mixture is something that contains two or

more substances.

Mixturescan be

Homogeneous HeterogeneousWe can see the

different substances.We can’t see the

different substances.

Propierties of materials.

Resistant: difficult to break.Fragile: easy to break.Rigid: doesn’t bend easy.Flexible: bend easy.Elastic: return to its original shape.Transparent: light can pass through.Opaque:light can’t pass through.Waterproof: water can’t pass through.Heat conductors: Heat can pass through.Heat insultators: Heat can’t pass through.

Propierties of materials.

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Materials can be

Natural ManufacturedThey come from Nature.•Plants•Animals•Minerals

They are made by natural materials transformed in a process.•Glass•Plastic•Fabric

Materials

NATURAL MATERIALS• Cotton

MANUFACTURED MATERIALS• Glass

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