Aim of Experiment To deduce which type of washing powder is the best in removing stains.

2. Aim of ExperimentTo deduce which type of washing powder is the best in removing stains. • B) Brief Description of your ExperimentPut chilli on rags and scrub off using toothbrush. • C) Apparatus you used8 pieces of cloth, a toothbrush, a basin of water, 2 packets of chilli sauce and 2 types of washing powder, Dynamo and Vanish. • D) VariablesIndependent varible-Type of washing powder.Dependent varible-No. of scrubs.Control varible-8 pieces of cloth,amount of washing powder. • E) Method • 1)Squeeze chilli onto rags. • 2)Pour washing powder on stains. • 3)Scrub off with toothbrush. • 4)Count the number of scrubs. • 5)Record observation.   • F) ResultsDynamo removed the stain and we could hardly see it, while for Vanish, it left a deep stain. • G) ConclusionDynamo is the most effective in removing stains. • H) Evaluation • We use different types of washing powder on two rags and repeated the experiment.It is to confirm our results .     • Group Members: Amali, Daphne Leo, Amanda Heah, Chen Xing Yu, NingJian • Appendix: • 1) Survey Result • 2) Videos/Photos