Science 3rd, unit 7

Science 3rd, unit 7

SCIENCE 3rd grade

UNIT 7

M A T T E R

J. Cesar Brazo Mur

El Tomillar, J.C. Brazo

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Science 3rd, unit 7

Everything is made up of matter...

Your home is MATTER

The water you drink is MATTER The air you breathe is MATTER Even YOU are MATTER...

El Tomillar, J.C. Brazo

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Science 3rd, unit 7

Matter can be MEASURED... mass volume length

El Tomillar, J.C. Brazo

Amount of matter an object has measurement: KILOGRAM

Space an object occupies measurement: LITER

Distance an object occupies measurement: METER

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Science 3rd, unit 7

MATTER

is anything that has mass and occupies space big

SIZE

PROPERTIES OF MATTER

SHAPE COLOR

TEXTURE

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regular

blue

rough

red

small irregular

green...

smooth

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Science 3rd, unit 7

STATES OF MATTER It can be in THREE DIFFERENT STATES

LIQUID

SOLID

Water, milk, orange juice, etc are examples of matter in LIQUID STATE

A chair, a pencil, some suggar are examples of matter in SOLID STATE Fixed

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GAS

Oxygen, nitrogen, or air are examples of matter in GASEOUS STATE Can be changed

Fixed

Adapted to the container

No fixed

Doesn't have its own shape

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Science 3rd, unit 7

LEATHER

NATURAL MATERIALS

WOOD

They come from NATURE CORK

TYPES OF MATERIALS MAN-MADE MATERIALS

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They are made

by PEOPLE

PLASTIC

GLASS

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Science 3rd, unit 7

NATURAL materials They come from Nature wood

living things

non-living things cobblestone

El Tomillar, J.C. Brazo

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Science 3rd, unit 7

MATTER can be...

PURE SUBSTANCES Made up of only ONE SINGLE ELEMENT

(water is an example)

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MIXTURES Made up of DIFFERENT SUBSTANCES

(a salad is an example)

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Science 3rd, unit 7

We get different types of materials from the Earth:

They all are NATURAL

We can transform them into other different materials:

They become ARTIFICIAL

Plastic, petrol, etc.

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Wood, paper...

Glass, chips, etc.

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Science 3rd, unit 7

MATTER CAN BE CHANGED...

PHYSICAL changes They can change: Size, shape, color...

But matter is the same

When we chop wood, it becomes smaller but it is also wood...

MATTER doesn't change

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CHEMICAL changes They change matter So, matter is not the same

When we burn some paper, it turns into ash.

Paper and ash are different types of matter.

MATTER changes

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Science 3rd, unit 7

MIXTURES ARE PHYSICAL CHANGES IN MATTER

In mixtures, different types of matter combine but they are the same

A salad is a mixture

In heterogeneous mixtures you can see the elements easily.

A cake is a mixture

In homogeneous mixtures you cannot see the elements easily.

El Tomillar, J.C. Brazo

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Science 3rd, unit 7

Did you know that...?

POLLUTION is a great problem today but we all can help Nature in different ways:

- RECYCLE materials like plastic, glass, cardboard, paper, etc.

- REUSE used papers - REDUCE the use of energy: turn the light off when you are not in the room, use your bike or walk as much a possible...

El Tomillar, J.C. Brazo

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