| A | B |
|---|
| An acid | turns litmus paper red |
| If it tastes sour it must be an | acid |
| An acid can react with some metals | to produce hydrogen |
| Acids conduct electricity when | dissolved in water |
| An alkali is a | base |
| Alkalis have a bitter taste and | feel slippery |
| Citric Acid | lemons, oranges, limes |
| Malic Acid | apples |
| Oxalic Acid | rhubarb |
| Acetic Acid | vinegar |
| Lactic Acid | sour milk |
| Carbonic Acid | soft drinks |
| Sulphuric Acid | automobile batteries |
| Table Salt | sodium chlorine |
| Baking Soda | sodium hydrogen carbonate |
| If an atom gains electrons | it has a negative charge |
| Acids have a | hydrogen ion |
| Bases have a | hydroxide ion |
| A covalent compound forms | when there is electron sharing between non-metal elements |
| A hydrogen molecule forms | by the sharing of electrons |
