chapter 7 acids bases and salts

Question 1

alkali

Answer 1

soluble hydroxides, pH greater than 7

Question 2

bases

Answer 2

include alkalis, are substances that can neutralise acids, metal oxides and metal hydroxides, pH greater than 7

Question 3

how is a salt formed

Answer 3

a compound formed when the hydrogen in an acid is partially replaced by metal or ammonium ions

Question 4

nuetralisation

Answer 4

when you react an acid with a base

Question 5

acid + base…

Answer 5

a salt and water

Question 6

acid + metal…

Answer 6

a salt and hydrogen

Question 7

acid + alkali…

Answer 7

a salt and water

Question 8

how are insoluble salts made?

Answer 8

reacting 2 solutions to produce a precipitate

Question 9

precipitation is…

Answer 9

an important way of removing some metal ions from industrial wastewater

Question 10

when is an indicator needed?

Answer 10

when a soluble salt is prepared by reacting an alkali with an acid

Question 11

strong acid

Answer 11

ionise completely in water

Question 12

weak acids

Answer 12

partially ionise in water/ do not fully ionise

Question 13

neutralisation between acids and alkalis

Answer 13

H + OH –> H20