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Physical and Chemical Changes — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7SciencePhysical and Chemical Changes1 Mark
MCQ
Physical changes are $.........:$
  • ✓
    Temporary
  • B
    Permanent
  • C
    Irreversible
  • D
    Endothermic
✓

Answer

Correct option: A.
Temporary
In a physical change, the substances are not altered chemically. No new products are formed.
A physical change can affect the size, shape or color of a substance but does not affect its composition. The substances may be changed to another phase $(i.e.$ gas, liquid, solid$)$ or separated or combined so physical changes are temporary.
Examples:
when ice melts when sulfur is mixed with iron filings. breaking a glass dissolving sugar in water

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