Acids and bases are opposites but are alike in many ways.
First, a base, a base is anything that forms a hydroxide ion in water. Bases are corrosive. Bases eat through other chemicals and other substances that is their job. Examples of these are antacids, eggs, household ammonias, and drain cleaners. Bases have a PH balance of above eight and no higher then fourteen.
Next are Acids. An acid is any substance that forms a Hydrogen ion in water. Acids also eat through things but are stronger. Acids can be highly dangerous and highly flammable. Acids have a PH balance of below seven. Examples of acids are milk, tomato, and Lemon juice.
Neutrals are substances that have no affect at all. They fall in the middle of the PH scale. An example of these is water.
The PH scale is the way the acids, bases, and neutrals are measure in strength. The strongest acids are first. They are numbers one through three. The weaker acids are four through six. These acids have a reaction but it is not as strong as the acids before them. Seven is neutral. Seven has no charge or reaction at all. Alone they cannot eat through anything or break down any other substance, but if combined with some substances can create a dangerous compound. Bases (the opposite of acids) are located on the other side of the scale. The bases are eight through fourteen. These are a little different though. The weaker ones start at eight and work their way up.
Comparing acids, bases and neutrals they are opposites but do have similarities.