1What is soap? Give one example.
2Name the raw materials used for making soap and state the job of each.
3What is saponification? Write its word equation.
4In the soap making experiment, what is left on the filter paper and what does the filtrate contain?
5Why is common salt added to the mixture when making soap?
6Why is soap not an efficient cleaner in hard water?
7Why is detergent called soapless soap?
8Give any three examples of detergents.
9Soap does not cause chemical pollution but detergent does. Why?
10Write any four harmful effects of long use of detergents.
11Write four differences between soap and detergent.