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प्रश्न
Classify the following as physical or chemical change :
Growth of a plant
विकल्प
Physical change
Chemical change
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उत्तर
Growth of plant – Chemical change
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संबंधित प्रश्न
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Fill in the blank.
A new substance is formed in a ............... change.
State whether the following is physical or chemical changes.
glowing of a bulb -
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
Select the chemical changes from the following list of changes
Preparation of carbon dioxide from calcium carbonate & dilute hydrochloric acid.
Which of the following is a physical change?
