The primary substance from which all other chemical compounds and substances are made is a____________.

A) element
B) compound
C) mixture
D) pure substance

element is probably what was intended. It is a poorly written question.

element

the answer to this question is d :)

The correct answer is A) element.

To determine the answer to this question, we need to understand the basic definitions of the options provided.

A) An element is a pure substance that consists of only one type of atom. It cannot be broken down into simpler substances by ordinary chemical means.

B) A compound is a substance formed by the combination of two or more elements in a fixed ratio. It can be broken down into simpler substances by chemical means.

C) A mixture is a combination of two or more substances that are physically mixed but not chemically combined. Mixtures can be separated into their individual components by physical methods.

D) Pure substances are materials that are made up of only one type of element or compound.

Based on these definitions, the primary substance from which all other chemical compounds and substances are made cannot be a compound or a mixture because they are composed of multiple elements or compounds. Similarly, a pure substance can only consist of one type of element or compound, so it cannot be the primary substance.

Therefore, the only option left is A) element. Elements are the building blocks of all other substances. They combine to form compounds, mixtures, and other substances through various chemical reactions.