making salts

what are safety precautions for making salts?

wear safety goggles

how do you make salts?

react sulfuric acid with excess copper oxide
filter excess copper oxide
heat the solution to start evaporation
turn off heat and leave until water has evaporated

what is the symbol equation for copper oxide and sulfuric acid?

CuO + H2SO4 → CuSO4 + H2O

how do separate an insoluble product from a solution

filter paper placed in funnel over a conical flask
pour mixture through
insoluble product left in filter paper

how can you separate soluble solids from solutions?

place mixture in an evaporating dish
heat solution
solvent evaporates and solution becomes more concentrated so crystals form
keep in dish until crystals dry

how can you separate a soluble solid using crystallisation?

pour solution into evaporating dish and heat gently
when crystals form, remove dish from heat and leave to cool
once cold, filter crystals out of solution and leave in warm place to dry

why is excess copper oxide used to make salts?

ensure all the sulfuric acid reacts