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प्रश्न
State whether the following is physical or chemical changes.
burning of sugar —
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उत्तर
chemical change,
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संबंधित प्रश्न
Try segregating the things around you as pure substances or mixtures.
Fill in the blank.
Changes that occur in nature are called ........................
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Which of the following are physical changes and which are chemical changes ?
Freezing of water
Classify the following as a physical or a chemical change.
Burning of paper
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.
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
Is a change of state of matter – a physical or a chemical change. Give reasons.
What type of change is colouring of a paper?
Mention a few physical properties of a substance.
