Question 8:
Diagram 8.1 shows word equation of the soap making process.
(b) Give one example of substance X. [1 mark]
(c) Diagram 8.2 shows the structure of a soap molecule.
Name the part Y and Z in the boxes provided in Diagram 8.2 using the following words given. [2 marks]
(d) A student found that her clothes stained with dirt.
Arrange the following cleansing actions of soap in the correct sequence in the boxes provided. [2 marks]
Answer:
(a) Saponification
(b) Palm oil
(c)
Y: Hydrophilic
Z: Hydrophobic
(d)
Diagram 8.1 shows word equation of the soap making process.
Diagram 8.1
(b) Give one example of substance X. [1 mark]
(c) Diagram 8.2 shows the structure of a soap molecule.
Name the part Y and Z in the boxes provided in Diagram 8.2 using the following words given. [2 marks]
Diagram 8.2
(d) A student found that her clothes stained with dirt.
Arrange the following cleansing actions of soap in the correct sequence in the boxes provided. [2 marks]
Answer:
(a) Saponification
(b) Palm oil
(c)
Y: Hydrophilic
Z: Hydrophobic
(d)