Chemistry Unit C1 Worksheet - Study And Revision Pack (Foundation Paper) Page 16
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34(c) Metal oxides react with acids to form a salt and water.
Complete the word equation for the reaction of magnesium oxide with nitric acid.
(2)
(Total for Question = 9 marks)
Q2.
(a) (i) Hydrochloric acid is produced in the stomach.
The acid kills bacteria.
State another reason why this acid is needed in the stomach.
(1)
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(ii) Some people take indigestion remedies.
Why are indigestion remedies taken?
Put a cross (
) in the box next to your answer.
(1)
A to make bacteria grow
B to release energy
C to produce chlorine
D to neutralise excess acid
(b) Dilute sulfuric acid reacts with zinc oxide.
Write the word equation for this reaction.
(2)
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(c) (i) Water, with some dilute sulfuric acid added, can be decomposed by passing a direct electric
current through it.
Complete the sentence by putting a cross (
) in the box next to your answer.
This process is
(1)
A electrolysis
B heating
C neutralisation
D precipitation
(ii) The water decomposes to form hydrogen and oxygen.
Describe a test to show that a gas is hydrogen.
(2)
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