obtaining pure salt from rock salt

science monday 31st october

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SOME KEY WORDS TO LOOK OUT FOR:
Solution-Solid dissolved in liquid
Solvent-liquid part
Solute-solid that's dissolved


THE AIM OF THE EXPERIMENT:To find out which solids are insoluble.

THE EQUIPMENT:
*Bunsen burner
*scales
*beaker
*flask
*evaporating bowl
*stirring rod
*water
*sample
*tripod
*gauze
*funnel
*goggles
*paper
*heat proof mat

SAFETY EQUIPMENT:
*Goggles
*hair bobble to tie hair back
*must stand up
*stand well back from hot equipment

METHOD:
1) Weigh 5g rock salt and put it into the beaker. Add a small amount of water
2) Stir for 2 minutes
3)filter the solution into a conical flask
4)collect the filtrate(the solution that comes through the funnel)
5)place the filtrate into the basin
6)heat the basin over a Bunsen burner until the salt solution starts to spit, then turn it off straight away
7)leave all your equipment to cool for 5 minutes before packing it away.
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