Question

Question 4

Which of the following is a pure substance?

water

air

tea

salt water

Answer 1

water

Step-by-step explanation:

Water, H2O is a pure substace, a compound made of hydrogen and oxygen.

Answer 2

water

Step-by-step explanation:

because air is made up by a whole bunch of atoms and ions that can not be broken down meaning that it is a pure subtance