Question

which best describes a compound such as sodium chloride? a pure substance that can be separated into different elements by physical means a mixture of two common substances that can be separated by chemical means a mixture of two common elements that can be separated by physical means a mixture of two common elements that can be separated by chemical means a pure substance that can be separated into different elements by chemical means

Explanation:

Sodium chloride (NaCl) is a compound. Compounds are pure substances made up of two or more different elements chemically combined. They can only be separated into their constituent elements by chemical means, not physical means. Physical means are used to separate mixtures.

Answer:

a pure substance that can be separated into different elements by chemical means