✦ New Age Learning 🔍
Home › Library › Science Lab - Advance 1 › Experiment 13 — Make the Water Safe

🧪 Lab 14 of 19 · Science Lab - Advance 1 · Class 8

Experiment 13 — Make the Water Safe

Try it in the interactive lab🔊 Audio

Topic: Chemistry · Class 8 · Pollution of air and water; purification

Aim: Turn the muddy pond water into water that is safe to drink .

Daily: This is exactly what a municipal waterworks does for a city, and what a household candle filter and a boiling pot do at home. Clear water is not the same thing as safe water.

Question: Water has been filtered until it is perfectly clear. Is it safe to drink?

Exp: Filtering removes dirt, not bacteria. Disinfection is a separate step.

Question: Boiling water makes it safe by…

Exp: Ten minutes of boiling kills most pathogens.

Exp: Decantation then pours off the clear water.

Question: Which disease is spread by contaminated water?

Exp: Typhoid and dysentery spread the same way.

Question: Alum is added at waterworks to…

Exp: Coagulation speeds up sedimentation.

All activities in Science Lab - Advance 1

  1. Part 2 — Chemistry
  2. Experiment 1 — The Bed of Nails
  3. Experiment 2 — How Far Does the Jet Squirt?
  4. Experiment 3 — Measuring Friction
  5. Experiment 4 — Pitch, Loudness and the Bell Jar
  6. Experiment 5 — Charge, Sparks and Lightning
  7. Experiment 6 — Mirrors Facing Mirrors
  8. Experiment 7 — Electroplating a Spoon
  9. Experiment 8 — Put Out the Fire
  10. Experiment 9 — Metal or Non-metal?
  11. Experiment 10 — Which Metal Wins?
  12. Experiment 11 — Choose the Right Fabric
  13. Experiment 12 — Splitting Crude Oil
  14. Experiment 13 — Make the Water Safe
  15. Experiment 14 — Build a Plant Cell
  16. Experiment 15 — Wake Up the Yeast
  17. Experiment 16 — Grow the Best Wheat Crop
  18. Experiment 17 — Break the Food Web
  19. Experiment 18 — The Life Cycle Puzzle

Practise for Class 8