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WorksheetsAcid, bases, salts (Part 1)
Total questions: 10
Worksheet time: 5mins
Which statements are properties of an acid?
1 reacts with ammonium sulfate to form ammonia
2 turns red litmus blue
Statement 1 & 2
Statement 1 only
Statement 2 only
None of the statement above
Which property is not characteristic of a base?
It reacts with a carbonate to form carbon dioxide.
It reacts with an acid to form a salt.
It reacts with an ammonium salt to form ammonia.
It turns universal indicator paper blue.
A sting from insect X has a pH of 6 and a sting from insect Y has a pH of 8. The table shows the pH of four substances
Which substances are used to treat the two stings?
X: hydrochloric acid; Y: sodium hydroxide
X: sodium hydrogen carbonate; Y: vinegar
X: sodium hydroxide; Y: hydrochloric acid
X: Vinegar; Y: sodium hydrogen carbonate
The table shows the pH of four aqueous solutions, W, X, Y and Z. Universal Indicator is added to each solution. Which row shows the colour of each solution after the indicator is added?
W: blue, X: green, Orange, Z: red
W: green, X: blue, Y: red, Z: orange
W: orange, X: red, Y: blue, Z: green
W: red, X: orange, Y: green, Z: blue
Hydrochloric acid is used to clean metals. The acid reacts with the oxide layer on the surface of the metal, forming a salt and water. Which word describes the metal oxide?
alloy
base
element
indicator
Which statement is not correct?
When a base reacts with an ammonium salt, ammonia is given off.
When an acid reacts with a base, neutralisation takes place.
When an acid reacts with a carbonate, carbon dioxide is given off.
When the acidity of a solution increases, the pH increases.
Which reaction is not characteristic of an acid?
It dissolves magnesium oxide.
It produces ammonia from ammonium compounds
It produces carbon dioxide from a carbonate.
It produces hydrogen from zinc metal.
Which equation for the reaction between sodium carbonate and dilute hydrochloric acid is correct?
Na2CO3(s) + HCl(aq) → NaCl(aq) + CO2(g) + H2O(I)
Na2CO3(s) + HCl(aq) → Na2Cl(aq) + CO2(g) + H2O(I)
Na2CO3(s) + 2HCl(aq) → NaCl(aq) + CO2(g) + H2O(I)
Na2CO3(s) + 2HCl(aq) → 2NaCl(aq) + CO2(g) + H2O(I)
Some reactions of a substance, R, are shown in the diagram.
What type of substance is R?
an acid
a base
an element
a salt
Which statements about alkalis are correct?
1 When reacted with an acid, the pH of the alkali increases. 2 When tested with litmus, the litmus turns blue.
3 When warmed with an ammonium salt, ammonia gas is given off.
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
