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15
×
What three things do you need for combustion to take place?
Oxygen, heat and fuel
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thief
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25
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gift
Win 25 points!
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shark
Other team loses 20 points!
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thief
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10
×
Can you think of an example where browning in fruit is desirable?
Turning grapes to raisins.
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10
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What do we call the oxidation of iron?
Rusting
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thief
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25
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gift
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gift
Win 10 points!
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banana
Go to last place!
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trap
No points!
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star
Double points!
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shark
Other team loses 20 points!
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thief
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20
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Can you describe what happens during the oxidation of a half eaten apple.
Students own answer
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15
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What three things can be used for fermentation?
Yeast, bacteria and microorganisms,
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15
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What happens to a car when it starts to rust?
It turns orange/red and becomes brittle.
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20
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What is oxidation?
It is a chemical reaction in which an atom loses one or more electrons to another atom.
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15
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Give three examples of combustion use in our everyday lives.
Students own answers
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10
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Name two types of mixtures
Homegeneous and heterogeneous
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15
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How can we seperate a soluble solid from a solution and give an example?
Evaporation. Salt from salt water through the heat from the sun.
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10
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Wha special fungus is sometimes added to cheese to make it softer?
penecillium
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5
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Can we separate a chemically combined mixture?
No
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15
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Name three types of separation techniques.
Filtration, evaporation and distillation
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