Acids and Bases

Question 1

what are acids

Answer 1

soluble hydroxides

Question 2

what are bases

Answer 2

substances that neutralise acids (including alkalis)

Question 3

what are examples of bases

Answer 3

metal oxides and metal hydroxides

Question 4

What do all Alkalis form

Answer 4

OH- (Hydroxide ions)

Question 5

What do all acids form when added to water

Answer 5

H+

Question 6

How do you make a salt

Answer 6

acid + metal -> salt + hydrogen

Question 7

How to test whether a substance is an alkali/acid

Answer 7

• universal indicator
• litmus paper

Question 8

what is the charge of water

Answer 8

neutral

Question 9

what is the salt called whens its formed from hydrochloric acid

Answer 9

chlorides (CL-)

Question 10

what is the salt called whens its formed from nitric acid

Answer 10

nitrates (NO3-)

Question 11

what is the salt called whens its formed from sulfuric acid

Answer 11

sulfates (SO42-)

Question 12

How is a precipitate made

Answer 12

by combining 2 different soluble salts

Question 13

what is a precipitate

Answer 13

insoluble solid formed in the reaction of a mixture

Question 14

what is a precipitate used for

Answer 14

• remove pollutants in waste water
• removes metal ions in waste water

Question 15

What are the products of an acid and alkali

Answer 15

salt and water

Question 16

What is the ionic equation of an acid and alkali

Answer 16

H+ + OH- -> H20