Choose the 3 chemical reactions. rust forming on a bike. rust forming on a bike. an apple being cut, exposed to oxygen, and turning brown. an apple being cut, exposed to oxygen, and turning brown. water being boiled and going from a liquid to a gas. water being boiled and going from a liquid to a gas. salt dissolving in hot water and becoming a homogenous substance. salt dissolving in hot water and becoming a homogenous substance. activating an ice pack and the cold pack goes from room temperature to cold.
