Advertisements
Advertisements
Question
State four differences between physical and chemical changes.
Advertisements
Solution
| Physical change | Chemical change |
|
|
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
Changes that occur in nature are called ........................
Write true or false for the statement.
Dissolving of solute in a solvent and rusting of iron are both physical changes.
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
State whether the following is physical or chemical changes.
lightning —
Write true or false
Burning of paper and formation of curd are reversible changes.
Classify the following as physical or chemical changes :
- Cooking of food
- Boiling of water
- Cutting of trees
- D0issolving salt in water
- Digestion of food
- Melting of ice
Fill in the blank.
The process of a liquid changing into a solid is called ________
Name the following:
The term involved in the change of state from – ‘water to ice’ – which is a physical change.
A physical change is generally____________.
Cutting a log of wood into pieces is a chemical change.
