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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

El Tomillar, J.C. Brazo

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

El Tomillar, J.C. Brazo

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

El Tomillar, J.C. Brazo

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)

El Tomillar, J.C. Brazo

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.

El Tomillar, J.C. Brazo

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

El Tomillar, J.C. Brazo

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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Science 3rd, unit 7