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प्रश्न
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
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उत्तर
Physical property
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संबंधित प्रश्न
Classify the following changes as physical or chemical:-boiling
State whether the following is physical or chemical changes.
mixing oil with water —
Write true or false
Rusting of iron is a chemical change.
Classify the following as a physical or a chemical change.
Melting of wax
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical 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.
When ice melts to form water, change occurs in its
Mention a few physical properties of a substance.
Explain the characteristics of physical change with examples.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
