Advertisements
Advertisements
Question
State whether the following is physical or chemical changes.
respiration in living beings —
Advertisements
Solution
chemical change,
APPEARS IN
RELATED QUESTIONS
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
State the various conditions that favour the process of evaporation.
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
Match the following
| Sr. No. | A | B | C |
| 1. | Melting | Change of state from liquid to solid | Ticking of clock |
| 2. | Condensation | Change of state from liquid to gas | Formation of ice cube |
| 3. | Evaporation | Change of state from solid to liquid | Collecting flowers |
| 4. | Freezing | Change of state from gas to liquid | Ice cube to water |
| 5. | Periodic change | Occurs at irregular time intervals | Water to steam |
| 6. | Non-periodic change | Occurs at regular time intervals | Steam to water drops |
Higher order Thinking question
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
Tearing of sheet of paper into pieces is ______ By the process of Heating of water, change.
Gas exists in three states as solid, liquid, and gas.
