Monday, September 7, 2009

Check List To Score A

Chapter 13: Chemicals for Consumers

A. Knowledge (Definition, meaning and facts)

Check

  1. What is soap?

  2. What is saponification process?

  3. What is detergent?

  4. State the functions of each of the following additives in detergent.
    1. Whitening agent(example: sodium perborate)
    2. Optical whitener(fluorescent dyes)
    3. Biological enzyme (Example: amylases, lipases, proteases and cellulases)
    4. Fragrance

  5. What is hard water?

  6. State the function of each of the following food additives:
    1. Preservatives ( Sodium nitrite, sodium benzoate)
    2. Antioxidants (Ascorbic acid)
    3. Flavourings (Monosodium glutamate (MSG), Aspartame)
    4. Stabilisers
    5. Thickeners


  1. State the functions of the following modern medicines.
    1. Analgesics ( Aspirin, Paracetamol, Codeine)
    2. Antibiotics ( Penicilin, Streptomycin)
    3. Psychotherapeutic medicine ( Stimulant, Antidepressant, Antipsychotic)


  2. State the side effects of paracetamol and aspirin.

B. Understanding / Application / Analysis
  1. Describe the cleansing action of soap.

  2. Explain why the cleansing action of a detergent is more effective than a soap in hard water.

C. Synthesis
  1. Describe a laboratory experiment to prepare soap from palm oil using the saponification process.

  2. Describe a laboratory experiment to investigate the cleansing action of a soap and a detergent in hard water.


Posted by at
Labels:

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)