Answer the following plz grade 8 science?

Question

1) litmus mixed with hydrochloric acid gives the color.......

2) a ray passes through a glass prisim what color will appear

3) name the type of chemical that speed up digestion

4) explain why large molecules need to be broken down into small molecules in degestive system

Answer 1

1. blue change to red

2. rainbow colour

3. enzyme

4. smaller molecules produced would be easier to absorbed through the intestine wall

Answer 2

1. The color of the litmus paper will turn from blue to red indicating the presence of acid.

2. Probably white, if not rainbow color. It depends on the amount of light that has passed the prism.

3. It is the hydrochloric acid which is released in the stomach during the time of digestion.

4. It is because smaller molecules are easy to digest rather than the large ones.