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Pelangi Science_P3_Chapter 4_Materials
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Sugar melts when it is …. And changes colour to yellow and then ….
Heated / brown
Sugar is a …..
Solid
When molten metal is …. It changes from bright yellow, to red, to pale gray.
Cooled
Molten metal has a fixed shape. TRUE / FALSE
False, it is like a liquid and has no fixed shape and can flow
….. …. Is metal that has been heated to a very high temperature.
Molten metal
When liquid chocolate is … it changes to a solid.
Cooled
When a chocolate bar is ….. it becomes liquid chocolate.
Heated
What happens when a gas is cooled?
It turns into a liquid / water
Steam is a gas to it …….. fixed shape and colour.
Has no
What happens when liquid water is heated?
It turns to a gas / steam
What word do we use for when ice turns into a liquid?
Melt
Ice can go from a solid to a liquid. TRUE/FALSE (and why)
TRUE - when ice is heated, it turns into a liquid
Solids have a fixed shape. TRUE / FALSE
True
What state of matter is ice?
Solid
What happens when we remove heat from liquid water?
It freezes and Saturns to a solid / ice
Liquids have a fixed shape and can flow. TRUE / FALSE
FALSE - liquids flow and have no fixed shape
Water is a …. at room temperature
Liquid
What is added to a raw prawn to make it change colour and shape?
Heat
When white bread it toasted it ….
Turns brown and and crispy
What happens to an eggs’ yolk and white when heat is added?
It turns to a solid. The yolk becomes a pale yellow, and the whites become a white solid.
Is the raw egg yolk a yellow solid or liquid?
Liquid
What part of a raw egg is a clear liquid?
Egg white
What can happen to materials when they are heated or cooled?
They can change shape and colour
Houses have …. Walls that can be dismantled and turned into walkways.
Brick
Pieces of fabric can be assembled to make ….
Bags / blankets / new clothes
Some materials can be …… like buttons on a shirt
Separated
Objects can be made of a …… of materials.
Combination
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