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Class VI - Science
Chapter - 6 Changes Around Us
Food: Where does it come from
Components of Food
Fibre to Fabric
Sorting Materials into Groups
Separation of Substances
Changes Around Us
Getting to Know Plants
Body Movements
The Living Organisms and Their Surroundings
Motion and Measurement of Distances
Light, Shadows and Reflections
Electricity and Circuits
Fun with Magnets
Water
Air Around Us
Garbage in, Garbage out
Some changes can be reversed and some cannot be reversed.
A change may occur by heating a substance or by mixing it with some other.
A
reversible
change is a change that can be undone or reversed. Melting is an example of a reversible change.
An
irreversible change
is a
permanent change
that cannot be undone. In an irreversible change, new substances are formed.
Heating a substance can cause an irreversible change.
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