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Changes Around Us — CHEMISTRY STD 6 — Question

ICSE BoardEnglish MediumSTD 6CHEMISTRYChanges Around Us3 Marks
Question
Differentiate between the following changes with suitable examples.
Slow and fast changes
✓

Answer

Slow :
  1. Changes that occur over a long period of time (few hours or many years) are called slow changes.
  2. Examples : Rusting of iron, germination of seed, tooth decay, soil formation, freezing of water, etc.
Fast changes :
  1. Changes that occur within a very short period of time or within seconds are called fast changes.
  2. Examples : Burning of paper lightning, during a thunderstorm, occurrence of earthquakes, etc.

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