# The law of constant composition (also called the law of definite proportions) applies to...

## Question:

The law of constant composition (also called the law of definite proportions) applies to _____.

a. solutions

b. heterogeneous mixtures

c. compounds

d. homogeneous mixtures

e. solids

## Matter:

Matter is anything that occupies space and has mass. It can be classified as either a pure substance or a mixture depending on what method, i.e. either physical or chemical, can break down its composition. A pure substance can be further classified as an element or a compound while a mixture can be identified as either homogeneous or heterogeneous mixture.