Question

13. A pure substance which is made up of only one kind of atom and cannot 1
be broken into two or more simpler substances by physical or chemical
means is referred to as *
(a) a compound
(b) an element
O (c) a molecule
(d) a mixture

Answer 1

Answer:

Compound

Explanation:

Answer 2

Pure elements are Substances which are made up of only one kind of atom. Air is a mixture of element and compound whereas alcohol in water is a mixture of compounds. CO2 is a pure compound and not an element.