Experiment 5A (Effectiveness of Cleansing Action of Soap and Detergent):
Aim: To compare the effectiveness of the cleansing actions of soap and detergent in hard water.
Problem statement: Is soap more effective than detergent in hard water?
Hypothesis: Suggest a hypothesis for this experiment.
Variables: Determine all the variables in this experiment.
Materials: Hard water, soap, detergent and cloth with greasy stain.
Apparatus: Beaker, measuring cylinder, spatula, glass rod and electronic scales.
Procedure:
Using the apparatus and materials supplied, plan an experiment to compare the effectiveness of the cleansing actions of soaps and detergents in hard water.
Results:
Record all observations in a table.
Conclusion:
Can the hypothesis be accepted? Write a conclusion for this experiment
Answer:
Hypothesis: Detergent is more effective than soap in hard water.
Variables:
Manipulated variable : Soap and detergent
Responding variable : Effectiveness of cleaning
Fixed variable: Volume of hard water
Procedure:
1. Pour 50 cm3 of hard water into a beaker.
2. Weigh 5 g of soap powder and pour it into the beaker.
3. Put a piece of cloth with grease stains into the beaker.
4. Clean/ Scrub / Wash the cloth.
5. Record the observation.
6. Repeat steps 1 to 5 using liquid detergent.
Result:
Aim: To compare the effectiveness of the cleansing actions of soap and detergent in hard water.
Problem statement: Is soap more effective than detergent in hard water?
Hypothesis: Suggest a hypothesis for this experiment.
Variables: Determine all the variables in this experiment.
Materials: Hard water, soap, detergent and cloth with greasy stain.
Apparatus: Beaker, measuring cylinder, spatula, glass rod and electronic scales.
Procedure:
Using the apparatus and materials supplied, plan an experiment to compare the effectiveness of the cleansing actions of soaps and detergents in hard water.
Results:
Record all observations in a table.
Conclusion:
Can the hypothesis be accepted? Write a conclusion for this experiment
Answer:
Hypothesis: Detergent is more effective than soap in hard water.
Variables:
Manipulated variable : Soap and detergent
Responding variable : Effectiveness of cleaning
Fixed variable: Volume of hard water
Procedure:
1. Pour 50 cm3 of hard water into a beaker.
2. Weigh 5 g of soap powder and pour it into the beaker.
3. Put a piece of cloth with grease stains into the beaker.
4. Clean/ Scrub / Wash the cloth.
5. Record the observation.
6. Repeat steps 1 to 5 using liquid detergent.
Result: