If a material contains three elements but not joined in a fixed proportion, it is a(an)

A. mixture.
B. compound.
C. atom.
D. none of the above

D?

a compound is fixed proportion, like two H and one O

an atom is fixed proportion, 100%

HOWEVER a mixture is not necessarily a fixed proportion.
Could be sand, water and cannon balls mixed in any proportions

A

A mixture is joined in a fixed proportion?

If a material contains three elements but "NOT" joined in a fixed proportion.

the answer c is wrong and B is joined in a fixed proportion so C and B is wrong. the answer is in A or D and am very confused.Please help

Compound

zoology

The correct answer is A. mixture.

To determine the answer, we need to understand the definitions of the terms mentioned.

An atom is the smallest unit of matter that still retains the chemical properties of an element. It cannot be broken down into simpler substances.

A compound is a substance that is made up of two or more different elements chemically combined in fixed proportions.

A mixture, on the other hand, is a material made up of two or more substances physically combined. The components of a mixture can be present in any proportion and can be easily separated from each other by physical means.

Based on this information, if a material contains three elements not joined in a fixed proportion, it is considered a mixture.