Ascientist compares two samples of white powder. one powder was present at the beginning of an experiment. the other powder was present at the end. she wants to determine whether a chemical reaction has occurred. she finds that neither sample bubbles or dissolves in water. she measures the mass and volume of the solids. sample one has a volume of 45 cm3 and a mass of 0.5
g. sample two has a volume of 65 cm3 and a mass of 1.3
g. what should the scientist conclude?

Answer. Chemical reaction had occurred and both the powders are different substances.

Explanation:

As density is an intensive property of the substance.Which means that  different substance have different densities.

Density =

Density of powder 1,

Density of powder 2,

On comparing both the densities of the powders we can say that both the substances are different. So we can conclude that the chemical reaction had occurred.

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

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