A
Give an example of a mixture that you would need a sieve to separate.
Anu suitable answer
What is the separating method used to separate chalk from water?
What is the method used to separate sugar from water?
Evaporation
True or False: Salt dissolves in water, but sand does not.
True
What do you call a mixture where one substance dissolves in another?
Solution
Which method is used to separate coffee grounds from liquid coffee
Filtration
What is the name of the method used to separate pebbles from sand?
Sieving
What is the apparatus used in Sieving?
A sieve
What separation technique can be used to clean up iron pollution from water
Magnetism
What happens to the water when wet clothes are hung outside on a sunny day?
It evaporates into the air.
What happens to the water in muddy water when using filtration?
It passes through the filter, leaving mud behind.
How does sieving help in baking?
It removes lumps from flour to make it finer.
Which tool is used to separate iron filings from sand?
A Magnet
Which liquid can be separated from a solid using filtration?
Water
Why does a sieve work for separating flour from rice?
The particles are different sizes
Why is filtration ineffective for separating sugar from water?
Because sugar dissolves completely in water, forming a solution and cannot be trapped by a filter.
What are the four materials that get attracted to a magnet
Iron, Cobalt, Steel, Nickel
Name all the apparatus used in filtration
Filter funnel, filter paper, conical flask
Why is sieving ineffective for separating salt from sand?
Since both salt and sand particles are small, they easily pass through the sieve, making separation ineffective.
Why is sieving used to separate flour from rice?
Flour particles are smaller and pass through the sieve, while rice remains
How is evaporation used to make sugar from sugarcane juice?
The water is evaporated, leaving behind sugar crystals.
What processes could be used to separate a mixture of pasta, sand and water?
1. Filtration
2. Evaporation
3. Sieving
List three examples of how separation methods are applied in real life
What processes could be used to separate a mixture of pasta, sand and salt?
1. Sieving
2. Add water to dissolve salt then filter to remove the sand
3. Evaporate the remaining solution to separate salt from water
How does evaporation help farmers dry harvested grains?
Moisture evaporates, preventing spoilage.