Question

A child accidently dropped coconut curry on the table cloth while having lunch.

i. What is the colour change of the stain when washed with soap water? (5)

ii. Name the substance present in the coconut curry which has caused the

change in colour of the stain in the soap solution. (5)

iii. State two differences between an acid and a base? (5)

Answer 1

Answer:

i.red

ii. basic substance

iii. acid are sour, bases are bitter

acids change blue litmus to red, bases change red litmus to blue