unit 1 - Acids + alkalis

Question 1

_____ + water = acid

Answer 1

non-metal oxide

Question 2

_____ + water = alkali

Answer 2

metal oxide

Question 3

acids have a pH of

Answer 3

less than 7

Question 4

alkalis have a pH of

Answer 4

more than 7

Question 5

can acids and alkalis conduct electricity? why?

Answer 5

they CAN conduct because they contain ions which are free to carry charge

Question 6

the more concentrated an acid or alkali, ________?

Answer 6

the better it conducts

Question 7

what is a base?

Answer 7

a soluble metal oxide which produces an alkaline solution

Question 8

which three groups of substances are bases?

Answer 8

carbonates, hydroxides, oxides

Question 9

what is neutralisation

Answer 9

the reaction of an acid with a base which results in the pH of a substance moving towards 7

Question 10

acid + metal oxide = ______?

Answer 10

salt + water

Question 11

acid + metal hydroxide = ______?

Answer 11

salt + water + hydrogen

Question 12

acid + metal carbonate

Answer 12

salt + water + carbon dioxide

Question 13

name the salt produced in a neutralisation of hydrochloric acid and sodium hydroxide

Answer 13

sodium chloride.

Question 14

acid + alkali = ______?

Answer 14

salt + water