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Study
Properties of Matter
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Yeast is a microorganism, a living thing. TRUE or FALSE?
True
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Yeast is a tiny animal. TRUE or FALSE?
False. It's a tiny fungus.
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It doesn't keep its shape or volume; it spreads to fill the space it's in.
gas
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Yeast decompose sugar. TRUE or FALSE?
True.
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It keeps its shape unless force is applied on it. it keeps its volume.
solid
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What happens if an ice cube is place outside the freezer for a long time?
It melts.
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How to separate water and salt?
Evaporation
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What happens if water sits in the freezer for a long time?
It freezes.
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When we boil water, does it "disappear"?
No, it evaporates. It changes state from liquid to gas - EVAPORATION.
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Yeast is useful for making bread. TRUE or FALSE?
True
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Water vapour and carbon dioxide are examples of
gases
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How to separate oil and water?
Deacanting
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It takes the shape of the container and stays the same volume.
liquid
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Ice, sugar and corn are examples of
solids
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Tiny droplets of water appear outside a cold cup because...
The water vapour in the air comes in contact with the cold glass and turns to liquid state - CONDENSATION
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Water, juice and oil are examples of
liquids
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Reversible or irreversible? Melt chocolate
Reversible
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By eating sugar, yeast releases carbon dioxide. TRUE or FALSE?
True.
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How to separate water and sand?
Filtering
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Reversible or irreversible? Burn paper
Irreversible
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How to separate sugar and corn?
Handpicking or sieving.
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