21259639
Description
Quiz by Isabel Ffranciso, updated more than 1 year ago
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Created by Isabel Ffranciso
about 4 years ago
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Question 1
Question
Chemical changes are
Answer
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non-reversible
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reversible
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sometimes reversible
Question 2
Question
What is always formed from a chemical change?
Answer
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Light
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Anew substance
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A colour change
Question 3
Question
Which of these is not an example of a chemical change?
Answer
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An explosion
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Rusting
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Freezing
Question 4
Question
If a piece of wood breaks, what type of change is it?
Answer
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Chemical change
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Physical change
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Both of them
Question 5
Question
Which of these is a physical change?
Answer
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Cooking eggs
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Burning wood
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Water turns into ice
Question 6
Question
Which of these chemical changes occur s in the absence of oxygen?
Answer
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Oxidation
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Fermentation
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Combustion
Question 7
Question
Which of these chemical changes transforms the substances into rust?
Answer
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Fermentation
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Combustion
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Oxidation
Question 8
Question
What is needed, as well as oxygen, in the process of combustion?
Answer
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Bacteria
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Fuel
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None of them
Question 9
Question
Circle the foods that are made by fermentation.
Answer
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Salad and fried chiken
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Wine and cheese
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Popcorn and coke
Question 10
Question
Combustion produces:
Answer
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Light and heat
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Sound
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Electricity
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