Which is a clue that a chemical change has occured?
a. a beaker suddenly becomes very warm when you mix two room-temperature liquids in it.
b. a liquid forms bubbles when it reaches a high temperature.
c. water changes color when you add food coloring to it.
d. a car door feels hot if you touch it on a summer afternoon.

A

Explanation:

B: That’s boiling

C: That’s physical.

D: That’s just heat being added.

It’s A because two liquids making one warmer liquid isn’t natural without a chemical making it do so.

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.