​⚖️ Class 9 Activity 9.1 Does Mass Change When Salt Dissolves? | Atomic Foundations of Matter

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Watch Namma Guru Sir demonstrate Activity 9.1: Dissolving Salt in Water from Class 9 Science (Chemistry) — Lesson 9: Atomic Foundations of Matter.

In this lab experiment, we measure the combined mass of water and common salt (NaCl) before dissolving to investigate whether mass changes during dissolution and whether it is a physical or chemical change.

Key Learning Points:

Conservation of mass during dissolution.

Dissolving salt in water is a physical change (no new substance is formed).

Practical demonstration following the Class 9 science syllabus.

Namma Guru Academy, Davangere
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