Physical Science Short Notes (Class 10)
Physical Properties of Matter
Properties observed without changing the substance.
1 Colour, Density, Melting point, Boiling point
2 No new substance formed
3 Usually reversible
Chemical Properties of Matter
Properties where a new substance is formed.
1 Burning, Rusting, Reaction with acids
2 New substance formed
3 Usually irreversible
Physical vs Chemical Change
1 Physical: No new substance, reversible
2 Chemical: New substance, irreversible
Law of Conservation of Mass
Mass of reactants = Mass of products
States of Matter
1 Solid: Fixed shape and volume
2 Liquid: Fixed volume, takes shape of container
3 Gas: No fixed shape or volume
Periodic Table
Modern Periodic Law: Properties of elements are periodic functions of their atomic numbers.
Structure
Physical Properties of Matter
Properties observed without changing the substance.
1 Colour, Density, Melting point, Boiling point
2 No new substance formed
3 Usually reversible
Chemical Properties of Matter
Properties where a new substance is formed.
1 Burning, Rusting, Reaction with acids
2 New substance formed
3 Usually irreversible
Physical vs Chemical Change
1 Physical: No new substance, reversible
2 Chemical: New substance, irreversible
Law of Conservation of Mass
Mass of reactants = Mass of products
States of Matter
1 Solid: Fixed shape and volume
2 Liquid: Fixed volume, takes shape of container
3 Gas: No fixed shape or volume
Periodic Table
Modern Periodic Law: Properties of elements are periodic functions of their atomic numbers.
Structure