Extra

• What are the two types of carbohydrate found in cake and bread?

  Starch and sugar
• What is the purpose of chemical tests in identifying carbohydrates in cake?

  To confirm the presence of specific carbohydrates
• Which chemical test can be used to detect the presence of starch in cake?

  Iodine test
• What color change indicates the presence of starch when using the iodine test?

  Blue-black
• Which chemical test is used to detect reducing sugars in cake?

  Benedict's test
• What color change indicates the presence of reducing sugars when using Benedict's test?

  Red-orange precipitate
• What safety precautions should be included in a risk assessment for conducting chemical tests on cake?

  Wear gloves and goggles to protect from chemicals
• Why is it important to conduct a risk assessment before performing chemical tests?

  To identify and mitigate potential hazards
• What are the key components of a risk assessment for chemical tests?

  • Identify hazards
  • Assess risks
  • Implement control measures
  • Review and monitor safety
• What are the steps involved in conducting the iodine test for starch?

  1. Add a few drops of iodine solution to the sample.
  2. Observe any color change.
  3. A blue-black color indicates the presence of starch.
• What are the steps involved in conducting Benedict's test for reducing sugars?


  1. Mix the sample with Benedict's reagent.
  2. Heat the mixture in a water bath.
  3. Observe the color change; a red-orange precipitate indicates reducing sugars.