1. Bell Activity – Split your scrap paper in half and label one side ‘ACID’ and the other side ‘BASE’
Place the following phrases under the appropriate heading:
Reacts with metals
Tastes Sour
Baking Soda
Tastes Bitter
Turns red litmus paper blue
Vinegar
Turns blue litmus paper red
Feels slippery
Drano
Conducts electricity
pH from 0 – 6
Makes ammonia gas
pH from 8 – 14
Dissolves in water to for H+ ions
Dissolves in water to for OH+ ions

2. ACID BASE Reacts with metals Dissolves in water to for H+ ions
Baking Soda
Turns red litmus paper blue
Drano
pH from 8 – 14
Tastes Bitter
Feels slippery
Conducts electricity
Makes ammonia gas
Dissolves in water to for OH+ ions
Reacts with metals
Dissolves in water to for H+ ions
Turns blue litmus paper red
pH from 0 – 6
Tastes Sour
Vinegar
Conducts electricity

3. Neutralization

4. Neutralization Reactions
 Neutralizations are a special type of double displacement reaction
Acids and bases react together to always form a salt and water 
Acid Base Salt + Water
Test pH of reactants with pH paper to show acid/base. Test pH of salt water after to show pH change
Boil off water while they write the next note, to show that salt is formed.

5. The specific salt formed depends on the acid and base.
ie. HCl NaOH NaCl H2O
(table salt)
ie. Mg(OH)2 + H2SO MgSO H2O
(Epson’s salt)
pH of products??
The salt and water have a neutral pH

6. Useful Neutralization Reactions
1. Hair stylists use acids and bases in perms and curling.

7. 2. Adding acids and baking soda to recipes causes cakes, biscuits and muffins to rise.
NaHCO3 + HCl → NaCl + H2CO3
H2CO3 → H2O + CO2

8. 3. Most household cleaners are bases
3. Most household cleaners are bases. They neutralize the acids in fats and grease to make them easy to remove.

9. Base Spill Clean up activity
Obtain a small beaker and add 0.5cm of base (NaOH). Add phenothalein to indicate it’s a base.
Use the pipettes to add HCl until it the pink goes away. This should be neutral. Test with pH paper to ensure.
If it is not neutral, add either a base or acid until it becomes neutral (test with pH paper)
Boil off water to see the salt.