Group 4 Water and Salt
by LEOW RUI WEN ISABEL .
1. Rationale:
2. Problem
2.1. The water is contaminated with salt and sand. We will need to separate the impurities in the water to obtain pure water.
3. Ideas
3.1. Step 1: Filter the sand using the filter bag
3.1.1. To separate sand and salt water
3.2. Step 2: Heat the salt water solution until it boils
3.2.1. To separate water and salt such the water will be evaporated while salt will be the residue.
3.3. Step 3: Place the aluminium foil on top of the boiling water
3.3.1. To provide a cooler surface for the water to condense.
3.4. Step 4: The water will then condense and drip down into the beaker.
3.4.1. To achieve our goal- separate the impurities in the water to obtain clean water.