Physical and Chemical Changes || Full Chapter in 1 Video || Class 7th Science || Junoon Batch
PW Little Champs 6th, 7th & 8th・2 minutes read
Physical and chemical changes are discussed, highlighting their differences and importance in everyday life, with chemical changes leading to the creation of new substances and irreversible transformations, while physical changes involve altering the appearance or state without forming new materials. It is crucial to understand these distinctions to identify the various reactions occurring and take steps to prevent corrosion, such as applying protective shields like paint or grease to prevent rusting on iron objects.
Insights
- Physical changes involve altering the appearance or state of a substance without creating new ones, like melting ice or shaping paper, while chemical changes result in the formation of new substances, such as rust forming on iron objects or burning paper to ash.
- Recognizing and understanding the distinction between physical and chemical changes is essential in identifying transformations in our surroundings, with chemical changes often irreversible and leading to the creation of new products, like the formation of iron sulfate from reacting iron with copper sulfate.
Get key ideas from YouTube videos. It’s free
Recent questions
What are physical changes?
Changes in appearance without new substances formed.
What are chemical changes?
Formation of new substances through reactions.
How can rusting be prevented?
Applying protective shields like paint or grease.
What is crystallization?
Formation of pure crystals from a solution.
How can physical and chemical changes be distinguished?
By recognizing the formation of new substances.
Related videos
PW Little Champs 6th, 7th & 8th
Physical And Chemical Changes in One Shot | Cheat Sheet For Class 7th
LearnFatafat
Class 7 Science Physical and Chemical Changes OneShot in 20 Minutes !! - LearnFatafat
BYJU'S - Class 6, 7 & 8
Physical and Chemical Changes - Complete Chapter | Mindmap with Explanation | Class 7
Technique Easy Education
আমাদের চারপাশের পরিবর্তন| অধ্যায়-৭ | পর্ব-২ | সপ্তম শ্রেণির বিজ্ঞান অনুসন্ধানী পাঠ | Class 7 Science
NEEV
Is Matter Around Us Pure FULL CHAPTER | Class 9th Science | Chapter 2 | Neev