Question

question #1 which is an example of a chemical property of matter? a color b density c reactivity d volume question #2 which set of observations is evidence that a chemical reaction took place in a mixture? a the mass of the components and the mass of the mixture are the same. b a solid component completely dissolved into the liquid component. c properties of the mixture (color, density, magnetism) are changed. d the mixture settles into two distinct layers when it’s left to sit for a while.

Explanation:

For Question #1, color, density, and volume are physical properties. Reactivity is a chemical property as it involves the ability of a substance to undergo a chemical change. For Question #2, a change in properties like color, density, or magnetism of a mixture can indicate a chemical reaction has occurred. Mass conservation can happen in both physical and chemical changes. Dissolving is a physical change. Settling into layers is a physical separation.

Answer:

Question #1: C. reactivity
Question #2: C. Properties of the mixture (color, density, magnetism) are changed.