Question

Ram has mixed oil,sand,water,salt, iron filings.how will he separate it

Answer 1

Equipment

• flask for combining the components in water
• magnet
• fliter flask, funnel and filter paper
• hot plate
• evaporating dish

Reagents

• sand
• iron filings
• sodium chloride
• water

Presentation

1. The three components are in their pure states, then combined into the water to form a heterogeneous mixture. The salt dissolves, the other solids do not.
2. Using the fact that the iron is magnetic, the magnet can be used to separate the iron fillings from the mixture by moving teh magnet around in the container. Keeping the magnet in a plastic bag makes it easy to separate the filings from the magnet when you pull it out.
3. The sand can then be separated by passing the remaining mixture through the filter paper.
4. The salt can be separated from the supernatant by pouring some into the evaporating dish on a hot plate and evaporating the water.