Measurement, Mass & Equations (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What happens to mass in a chemical reaction?
What happens to mass in a chemical reaction?
Mass is conserved
Why might mass appear to change in some reactions?
Why might mass appear to change in some reactions?
Gases can escape or enter container
What does calcium carbonate () decompose into when heated?
What does calcium carbonate () decompose into when heated?
and
Why does mass appear to decrease when heating in open air?
Why does mass appear to decrease when heating in open air?
gas escapes
What container type allows to escape during decomposition?
What container type allows to escape during decomposition?
Open container
What does iron () react with when exposed to air to form rust?
What does iron () react with when exposed to air to form rust?
Oxygen ()
Why does iron appear to gain mass when it rusts?
Why does iron appear to gain mass when it rusts?
Oxygen from air combines with it
Which reaction shows an apparent gain of mass?
Which reaction shows an apparent gain of mass?
Iron rusting in air
Which reaction shows an apparent loss of mass?
Which reaction shows an apparent loss of mass?
Heating (open)
When escapes, is mass actually lost or does it just appear lost?
When escapes, is mass actually lost or does it just appear lost?
It just appears to be lost