Question

Use the drop-down menus to complete the statements.


are pure substances that cannot be broken down into a simpler form.


are units of two or more atoms.


are the smallest possible particles of an element.


are pure substances made of two or more atoms of different elements.

Answer 1

Elements are pure substances that cannot be broken down into a simpler form.

Molecules are units of two or more atoms.

Atoms are the smallest possible particles of an element.

Compounds are pure substances made of two or more atoms of different elements.