Practice Questions for Physical and Chemical Changes Science Class 8
The representation of a chemical reaction using symbols and formulas of the substances is called __________.
Keep an iron rod in moist place for a few days. A reddish brown deposit is found on it. Why is this deposit formed?
A silver spoon tarnishes. This is an example of a __________.
In a displacement reaction, a more reactive metal displaces a less reactive metal from its compound. Is this statement true?
Naturalisation is __________ change.
Adding sodium chloride to water is a __________.
Electric Current and its Effects
Light and Reflection
Structure of Matter
Acids, Bases and Salts
The Air Around Us
Where does Food Come From?
What are the Components of Food?
Properties of Magnets
Motion and Measurement of Distances
Electricity in Daily Life
Changes Around us
Sorting and Classifying Things
Separation of Substances
Fibres, Fabric and Clothing
Lights, Shadows and Reflection
Living Organisms and their Surroundings
The World Around us
Parts and Functions of Plants
Parts and Functions of Animals