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🧪 Lab 12 of 21 · Science Lab - Advance 3 · Class 10

Experiment 11 — Ionic or Covalent?

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Topic: Chemistry · Class 10 · Metals and non-metals: properties of ionic compounds

Aim: Identify which white powder is sodium chloride (ionic) and which is sugar (covalent).

Daily: Two white powders can look identical. A laboratory tells them apart by behaviour, not appearance — the same logic used to detect adulteration in food.

Question: Which solution will conduct electricity?

Exp: Ionic compounds release free ions in solution; sugar does not.

Question: Ionic compounds have high melting points because…

Exp: A lot of energy is needed to break the lattice.

Question: Solid sodium chloride does not conduct electricity because…

Exp: Melt or dissolve it and it conducts.

Question: A covalent compound is formed by…

Exp: Typically between non-metals.

Question: Which dissolves in kerosene?

Exp: Ionic compounds prefer water.

All activities in Science Lab - Advance 3

  1. What Next? Careers in Science
  2. Experiment 1 — Verify Ohm’s Law
  3. Experiment 2 — Series or Parallel?
  4. Experiment 3 — Choose the Right Fuse
  5. Experiment 4 — Make the Coil Spin
  6. Experiment 5 — Make Electricity from Movement
  7. Experiment 6 — Find the Image
  8. Experiment 7 — Correct the Vision
  9. Experiment 8 — Balance the Equation
  10. Experiment 9 — Read the pH
  11. Experiment 10 — Win the Metal from Its Ore
  12. Experiment 11 — Ionic or Covalent?
  13. Experiment 12 — Build a Carbon Compound
  14. Experiment 13 — Soap, Detergent and Hard Water
  15. Experiment 14 — Spot the Reaction Type
  16. Experiment 15 — Trace the Blood
  17. Experiment 16 — The Reflex Arc
  18. Experiment 17 — Which Way Will It Grow?
  19. Experiment 18 — From Pollen to Seed
  20. Experiment 19 — Mendel’s Peas
  21. Experiment 20 — Who Decides the Sex of the Child?

Practise for Class 10