Advertisements
Advertisements
प्रश्न
What type of energy changes is associated when ice melts?
Advertisements
उत्तर
- Physical change
- Endothermic (heat energy is absorbed)
APPEARS IN
संबंधित प्रश्न
Explain the following giving an example.
Pure substance
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
Write true or false
Cutting of paper into pieces is a chemical change.
Write true or false
Earthquake is a desirable change.
Write true or false
Melting of ice is a physical change.
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
Ice kept in a beaker, slowly melts and turns into water. The water in the beaker on solidification is freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.
What type of change is colouring of a paper?
Match the items of Column I with the items of Column II.
| Column I | Column II | ||
| (a) | Large crystals | (i) | Turns lime water into milky |
| (b) | Depositing a layer of zinc on iron | (ii) | Physical change |
| (c) | Souring of milk | (iii) | Rust |
| (d) | Carbon dioxide | (iv) | Sugar candy (Mishri) |
| (e) | Iron oxide | (v) | Chemical change |
| (f) | Dissolving common salt in water | (vi) | Galvanisation |
A physical change is generally____________.
