The document outlines the learning goals related to neutralization, reactions of acids with metals and carbonates, and a series of experiments to observe gas production from different acid concentrations. It describes the importance of identifying unknown liquids using a plant indicator method to distinguish between an acid, a base, and water. The overall objective is to understand the chemical reactions and safety considerations involved.

1. Learning Goals:
To understand what neutralisation is
To understand reactions between acids and
metals
To understand reactions between acids and
carbonates

2. Sodium
Hydroxide
Cl
Na
Cl
H+
Cl
H+
Na
Cl
H+
Cl
OH+
H+
Hydrochloric
Acid
OH+
H+
OH+
H+
Na
Cl

3. Na
OH-
Cl
Cl
Na
Na
OH-
H+
H+
OH-
Cl
H+

4. Na
OH-
Cl
Cl
Na
Na
OH-
H+
H+
OH-
Cl
H+

5. Na
SALT
Cl
H+
+
OH-
WATER

6. ACID + BASE = SALT + WATER

9. Concentration of acid (M)
Volume of gas produced (ml)
0.1
5
0.2
10
1
50
3
100
4
200
An acid reacts with a metal to produce a salt, water and
carbon dioxide.
An experiment was carried out testing 5 different
concentrations of acid, to see how gas each gives off when
reacting with a metal.
Draw a graph of these results

10. In your garage, you discover 3 identical bottles with no labels. Each contains
a clear liquid. You know that one is an acid used to clean the pool, one is a
base used to clean clothes, and the other is just water. But they all look the
same!
You’ve heard that some acids and bases give off dangerous fumes so having a
sniff is a bad idea.
You remember that in year 9 science, you used a plant to tell which samples
were bases, which were acids and which were neutral. You look out into the
garden and notice that you have this plant growing there.
Write down the steps you would take to tell which is the
acid, which is the base and which is the water