Skill B&C
Title: Hardness of water
Aim: Test the hardness of water
Apparatus: Sea water, Rain water, Tap water, Aqua pure(bottled water), detergent, large cylinder
Method:
- Place approximately 20 ml of sea water in cylinder
- Add a few drops of detergent and shake vigorously
- Record all data collected
- Repeated steps one to three for all different types of water
- Process the results in a suitable manner
- Clean up work area
Observation: When detergent is added to a cylinder with water and then shaken suds are produced. Aqua pure water produced the most suds and the Sea water barley lathered at all and instead produced a greyish scum.