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
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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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