Complete the blanks from the list given:

Ammonia, Ammonium, Carbonate, Carbon dioxide, Hydrogen, Hydronium, Hydroxide, Precipitate, Salt, Water.

A solution X turns blue litmus red, so it must contain (i) …………… ions; another solution Y turns red litmus blue and therefore, must contain (ii) …………… ions. When solutions X and Y are mixed together the products will be a (iii) …………… and (iv) …………… . If a piece of magnesium were put into solution X, (v) …………… gas would be evolved.

Match the following:

What is the term defined : i) A base which is soluble in water.

The acid which contains four hydrogen atoms is :

1. Formic acid
2. Sulphuric acid
3. Nitric acid
4. Acetic acid