Advertisements
Advertisements
प्रश्न
State whether the following is physical or chemical changes.
cutting wood into small pieces —
Advertisements
उत्तर
physical change,
APPEARS IN
संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Explain the following giving an example.
Pure substance
Write true or false for the statement.
Deforestation is a man-made change
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
Give reasons why – separation of mixtures e.g. iron from a mixture of iron and sulphur is a physical change, but heating a mixture of iron and sulphur is considered a chemical change.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
Mention some of the different conditions needed for chemical changes to occur.
