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प्रश्न
State whether the following is physical or chemical changes.
shaping a piece of glass —
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उत्तर
physical change,
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संबंधित प्रश्न
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Write true or false
Cutting of paper into pieces is a chemical change.
Classify the following as a physical or a chemical change.
Butter getting rancid
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
Give the reason why the following is considered as chemical changes.
Copper carbonate on heat gives copper oxide and carbon dioxide.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
Name the following.
A form of energy required for a chemical change.
Classify the following changes as physical and chemical changes
A rough piece of wood is sanded and polished resulting in change in texture, Rusting of a iron nail, Painting the grill, Bending a paper clip, Pounding silver into thin plate, Rolling the chappathi dough into thin wire, Occurrence of day and night, eruption of volcano, burning of matchstick, dosa from the batter, blinking of eyelids, occurrence of a thunderstorm, rotation of the earth, formation of eclipses.
| Sr. No. | Physical changes | Chemical changes |
| 1. | ||
| 2. |
Cutting a log of wood into pieces is a chemical change.
