Advertisements
Advertisements
प्रश्न
What type of change is colouring of a paper?
Advertisements
उत्तर
Physical change.
APPEARS IN
संबंधित प्रश्न
Try segregating the things around you as pure substances or mixtures.
Write true or false for the statement.
Dissolving of solute in a solvent and rusting of iron are both physical changes.
State four differences between physical and chemical changes.
Name a chemical change which takes place in presence of:
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
Solve this crossword by using the clues that follow-
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Natural and man-made change.
Is a change of state of matter – a physical or a chemical change. Give reasons.
State which of the following 1 to 5 pertain to – A: Physical Change B: Chemical change :
- Sublimation.
- Fermentation.
- Liquefaction or condensation.
- Magnetization.
- Respiration.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
