Acids and Alkalis 2

Question 1

non-metal oxides dissolve in water to form

Answer 1

acids

Question 2

metal oxides dissolve in water to form an

Answer 2

alkaline solution

Question 3

acids may be neutralised by

Answer 3

soluble or insoluble metal hydroxides, metal oxides or metal carbonates

Question 4

acid + alkali

Answer 4

salt + water

Question 5

base

Answer 5

a substance which neutralises an acid

Question 6

alkalis

Answer 6

bases which dissolve in water

Question 7

acid + metal ➡️

Answer 7

salt + hydrogen

Question 8

acid + metal hydroxide ➡️

Answer 8

salt + water

Question 9

acid + metal oxide

Answer 9

salt + water

Question 10

acid + metal carbonate ➡️

Answer 10

salt + water + carbon dioxide

Question 11

acids

Answer 11

substances which dissolve in water to produce an excess of hydrogen ions

Question 12

alkalis

Answer 12

substances which dissolve in after to produce an excess of hydroxide ions

Question 13

neutral solution

Answer 13

contains equal numbers of hydrogen ions and hydroxide ions

Question 14

hydrochloric acid

Answer 14

HCl

Question 15

sulfuric acid

Answer 15

H₂SO₄

Question 16

nitric acid

Answer 16

HNO₃

Question 17

sodium hydroxide

Answer 17

NaOH

Question 18

calcium hydroxide

Answer 18

Ca(OH)₂

Question 19

ammonium hydroxide

Answer 19

NH₄OH

Question 20

titration

Answer 20

• neutralise an acid with an alkali accurately
• this produces a salt and water
• evaporate the water to produce a pure sample of the salt

Question 21

spectator ions

Answer 21

not involved in the reaction because they remain unchanged

Question 22

a salt can be regarded as a

Answer 22

substance in which the hydrogen ion of the acid had been replaced by the positive metal ion of the neutraliser

Question 23

H⁺ (aq) + OH⁻ (aq)

Answer 23

H₂O (l)