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