Sam has been asked to separate the sand from a mixture of sand and gravel.
He uses this equipment.
Important Questions on Elements, Compounds and Mixtures
Seama has been asked to separate sand from a mixture of sand and salty water.
She uses this equipment :
A mixture contains 100g of water and 10g of salt.
State the mass of salt left if all the water vapour evaporates. Explain your answer.
State if the result supports your prediction.
Explain the results of this test.
Sasha is growing crystals. She wants to grow some copper sulphate crystals, but someone has contaminated the copper sulphate with Chalk.
Now she needs to get a purple sample of copper sulphate before she can start growing the crystals.
Sasha plans her method. She looks in the equipment cupboard but is not sure which pieces of equipment to use.
Help sasha decide.
Step 1: Mix the chalk- copper sulphate mixture with water and stir.
Step 2: Filter the mixture.
Step 3: evaporate the filtrate
For each step:
Draw a labelled diagram
For each step:
Explain why you have chosen the equipment.
Complete the sentences.
Choose from the words in the list.
| Element | Mixture | Compound |
When Iron and sulphur are mixed together and heated they form a new _____ .
The diagram shows a drawing of apparatus you could use to separate mixtures.
Which pieces of equipment would, you used to:
Write down the letter.
Separate sand from Sandy Water _____ .
The diagram shows a drawing of apparatus you could use to separate mixtures.
Which pieces of equipment would, you used to:
Write down the letter.
Separate iron nails from sand _____ .
The diagram shows a drawing of apparatus you could use to separate mixtures.
Which pieces of equipment would, you used to:
Write down the letter.
Separate salt from salty water _____ .
