1
Q
Soap reacts with …. Water to form….
A
Hard water
Scum
2
Q
Soap less detergents do not form
A
Scum
3
Q
When ….. Hard water is …… It produces ….
A
Temporary hardwater
Is heated
It produces scale
4
Q
Scale makes heating systems
A
Less efficient
5
Q
Pros hard water ( 2)
A
Reduces risk of heart disease
Helps develop strong teeth and bones
6
Q
Cons hard water (3)
A
Less efficient for heating
Costs money to clean
Use more soap for each clean
7
Q
We get water from ( 6)
A
Bore holes Streams Springs The sea Rivers Rain water
