Achemist is studying an unknown substance. he can break it into its elemental components only by using chemical means how should the unknown substance be classified

Explanation:

An element is defined as a substance that contains same type of atoms.  An element can never be broken down into its constituent particles.

For example, a spoon made up of only copper metal will contain only atoms of copper.

A compound is defined as a substance in which atoms chemically combine together in a fixed ratio by mass.

For example, is a compound.

A compound can be broken down into its constituent particles by chemical means.

therefore, we can conclude that given unknown substance be classified as compound.

hi,

the answer is d, it has indefinite shape but definite volume.

hope this !

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume