neutralisation

Question 1

what happens when a substance from a base reacts with acid, what does it form?

Answer 1

forms salt and water

Question 2

what is a neutralisation reaction?

Answer 2

when products have a neutral pH

Question 3

what happens when the base is a metal carbonate, what does it produce?

Answer 3

the reaction produces carbon dioxide

Question 4

how many stages are their to make salts by neutralisation?

Answer 4

5

Question 5

what is stage 1?

Answer 5

wearing eye protection, add an acid to a base 1cm3 at a time with a measuring cylinder

Question 6

what is stage 2?

Answer 6

After every few drops, remove a small sample to check if the pH is neutral

Question 7

what is stage 3?

Answer 7

keep adding acid until the solution is neutral

Question 8

what is stage 4?

Answer 8

when its neutral the solution is put in an evaporating dish and about two thirds of it can be boiled off to make a saturated solution of the salt

Question 9

what is stage 5?

Answer 9

leave this solution overnight for the rest of the water to evaporate and nice big salt crystals will form. the slower the crystallisation, the bigger the crystals