Matter 2
description
Transcript of Matter 2
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PROPERTIES OF MATERIALSMATERIALS CAN BE:
RESISTANT (BREAK) FRAGILE
RIGID (BEND) FLEXIBLE
TRANSPA-
RENT
(LIGHT) OPAQUE
PER-MEABLE
(WATER) WATER
PROOFHEAT
CONDUCTORS(HEAT) HEAT
INSULATORS
ELASTIC
KEY WORD
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RESISTANT MATERIALS ARE DIFFICULT TO BREAK
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FRAGILE MATERIALS BREAK EASILY
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A RIGID MATERIAL DOESN’T BEND EASILY
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A FLEXIBLE MATERIAL BENDS REALLY EASILY
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AN ELASTIC MATERIAL RETURNS TO ITS ORIGINAL SHAPE
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LIGHT CAN PASS THROUGH A TRANSPARENT MATERIAL
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LIGHT CAN’T PASS THROUGH AN OPAQUE MATERIAL
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WATER CAN PASS THROUGH A PERMEABLE MATERIAL
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WATER CAN’T PASS THROUGH A WATERPROOF MATERIAL
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CURIOUS FACTS:
Our skin is waterproof.
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Birds like penguins or gannets need to fish in the water, so they have WATERPROOF feathers.
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A gannet fishing
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HEAT CAN PASS THROUGH HEAT CONDUCTORS EASILY
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HEAT CAN’T PASS THROUGH HEAT INSULATORS EASILY
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NATURAL MATERIALS COME FROM NATURE.
THEY CAN COME FROM PLANTS.
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wood
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cotton
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Natural rubber
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THEY CAN COME FROM ANIMALS
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wool
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leather
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silk
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They can come from minerals
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oil
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MANUFACTURED MATERIALS: They are made from natural materials that are transformed into
manufactured ones through a manufacturing process. This process normally takes place in
factories
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From wood we obtain paper, books, pencils, furniture, etc.
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From cotton we get clothes, pillows, bedding, etc.
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From natural rubber we take tyres, clothes, rubbers for school, etc.
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From wool we obtain clothes, wool string, blankets, etc.
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From leather we get clothes,rugs, etc.
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From silk we get clothes, bedding, etc.
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From oil we obtain plastic,
nylon for clothes, fuel,
etc.
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From sand we get glass
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