Question

Classify each item by matching as a compound (C) or element (E). Cu HCl CCl₄ Co HI CH₄

Answer 1

Cu (E)
HCl (C)
CCl4 (C)
Co (E)
HI (C)
CH4 (C)

Answer 2

A pure substance which can be separated into simpler substances by any chemical or physical means is known as compound. Compounds have two or more type of atoms.

A pure substance which cannot be divided into simpler substances by any chemical or physical means is known as elements. Elements have only one type of atom.

Hence,

`Cu` is element (E)

`HCl` is compound (C)

`CCl_4` is compound (C)

`Co` is element (E)

`HI` is compound (C)

`CH_4` is compound (C)