Is colour a chemical or physical

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.

Why is the melting of ice a physical change ?