Acids and bases make pH indicators turn different colors ... property of a substance and that a color change can also be used as evidence that a chemical reaction has occurred. Students will explore ...

understand the core ideas about acids and bases; explain how the key ideas of acids and bases develop at more advanced levels; identify common misconceptions and know how these can be addressed or how ...

This pigment is a natural acid-base indicator. It is blue in neutral substances, like plain water. When an acid like lemon juice gets in the water, a reaction makes the indicator molecule change shape ...

Neutralisation is the reaction of an acid with a base that results in the pH moving towards 7. It is a useful process that occurs in everyday life such as in the treatment of acid indigestion and ...

A neutralisation reaction is one in which an acid reacts with a base to form water. A salt is also formed in this reaction. Bases are metal oxides, metal hydroxides and metal carbonates.