What is a substance that gives away a proton or hydrogen ion (H⁺) when dissolved in water.

• Acid

• Base / Alkali

What is a substance that when dissolved in water produces hydroxide (OH^-) ions.

• Acid

• Alkali

Describe what an indicator is.

Complete the general word equation below for a neutralisation reaction.

acid + base → _______ + water

Given that you can determine the salt produced from the names of the acid and the alkali, suggest the names of the salts in the following reactions. Hint: hydrochloric acid makes chloride salts, sulfuric acid makes sulfate salts and nitric acid makes nitrate salts.

hydrochloric acid + calcium carbonate → _______ ________+ water + carbon dioxide

Given that you can determine the salt produced from the names of the acid and the alkali, suggest the names of the salts in the following reactions. Hint: hydrochloric acid makes chloride salts, sulfuric acid makes sulfate salts and nitric acid makes nitrate salts.

hydrochloric acid + aluminium hydroxide → _________ _______ + water

Given that you can determine the salt produced from the names of the acid and the alkali, suggest the names of the salts in the following reactions. Hint: hydrochloric acid makes chloride salts, sulfuric acid makes sulfate salts and nitric acid makes nitrate salts.

nitric acid + ammonia → ________ _______

Given that you can determine the salt produced from the names of the acid and the alkali, suggest the names of the salts in the following reactions. Hint: hydrochloric acid makes chloride salts, sulfuric acid makes sulfate salts and nitric acid makes nitrate salts.

nitric acid + lead oxide → ____ _______ + water

Indigestion can occur when stomach acid erodes (wears down) the protective lining of the stomach. One method of treatment is to ingest an antacid tablet to neutralise the stomach acid.

Would you expect the antacid to be acidic or alkaline?

• Acidic

• Alkaline

When an antacid tablet is consumed to help neutralise the stomach acid, would you expect the pH in the stomach to increase, decrease or remain the same? Explain your reasoning.