When and acid and alkali are mixed we call the reaction…
a neutralisation reaction
If a strong acid is added to a strong alkali we may be left with
a neutral solution
If a weak acid is added to a strong alkali the solution may still be
a weak alkali
Acid + Alkali —> _______ + ______
Acid + Alkali –> Salt + Water
We can use _______ ______ to help us to see if an acid or alkali have been neutralised
Universal indicator
Bacteria in you mouth produce acid which damages teeth. Toothpastes contain the alkali ________ _______ which neutralises this acid
bicarbonate of soda
How do we know if a chemical reaction is taking place?
Gas released
Bubbles/Fizzing
Temperature change
Light given off