Changes Around Us: Physical and Chemical — Science STD 7 — Question
Gujarat BoardEnglish MediumSTD 7ScienceChanges Around Us: Physical and Chemical2 Marks
Question
Can a physical change have harmful effects? Explain with examples.
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Answer
Yes, physical changes can have harmful effects. Example: The increased consumption of fuels in cars and airplanes leads to a rise in carbon dioxide levels in the atmosphere, contributing to climate change. Similarly, the drying of paint on walls and furniture releases substances through evaporation, causing atmospheric pollution.
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