Question

part a
why does the hot water turn purple when poured over red cabbage leaves?

Explanation:

Red cabbage contains a pigment called anthocyanin. When hot water is poured over red - cabbage leaves, the heat disrupts the cell membranes of the cabbage cells, causing the anthocyanin to leak out into the water, which turns the water purple.

Answer:

The heat disrupts the cell membranes of red - cabbage leaves, causing the anthocyanin pigment to leak into the water, turning it purple.