Physical And Chemical Changes in One Shot | Cheat Sheet For Class 7th
PW Little Champs 6th, 7th & 8th・2 minutes read
Physical changes involve alterations in physical properties without forming new substances, are mostly reversible, and do not affect chemical properties. Chemical changes, like burning paper or rusting iron, result in the formation of new substances that are irreversible, showcasing distinct properties. The text emphasizes the differences between physical and chemical changes through various examples to aid in understanding these concepts better.
Insights
- Changes in substances can be categorized into physical and chemical changes, with physical changes altering physical properties without forming new substances, while chemical changes involve the creation of new substances through chemical reactions.
- The distinction between reversible and irreversible changes is crucial, with reversible changes like folding paper being temporary and not leading to new substance formation, while irreversible changes like burning paper result in permanent alterations and the formation of new substances, showcasing the transformative nature of chemical changes.
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Recent questions
What are physical changes?
Changes in physical properties without new substances forming.
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