WBSED - 7 - Science :: Atom, Molecules and Chemical Reaction

Go To: WBSED-Science-Grade 7

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[Contributor - Poornima Menon]

Objective: To teach students the concept of atoms, molecules and various chemical reactions

Subtopics to be covered:

1. Symbols of chemical elements in the periodic table
2. Concept of protons, electrons and neutrons,
3. Concept of positive and negative ions
4. Write the formula for compounds and their charges
5. Chemical reactions and equations, balancing of equations

Learning Outcome:

1. To make students aware of the concept of chemical reactions and formulas
2. Students will learn how to balance chemical equations

[Author - Kripa S]

http://www.wbsed.gov.in/wbsed/readwrite/etextbook/General%20Science%20Class%20VII.pdf#page=95 (Bengali Medium)

[Author - Kripa S]

https://www.youtube.com/watch?v=DEdRcfyYnSQ (bond formation)

[Author - Kripa S]

http://www.mammothmemory.net/mammoth_memory/images/user/scaled/ks-s-600x400-Lithium.jpg (example of atomic number and mass number)

http://www.eklavya.org/valency%20card%20chemistry.jpg (how a compound is formed)

https://3.bp.blogspot.com/-O1tyQ-bAtD0/WLRyjQoa4tI/AAAAAAAACpQ/GnROX4H8pmsGUiTNEVWfm0oSpSCe4VO-QCLcB/s1600/luke1.png (types of chemical reaction)

[Contributor - Biswadeep Ghosh hazra] ) https://drive.google.com/open?id=1wP5GDq0I6Qv0o7_TfNZspjV6zgZcwfXN (Answer Key)

[Contributor - Biswadeep Ghosh hazra]

https://drive.google.com/open?id=19kj4UzuXmm9TUA_BBfjNxf-m9eaa4g4s

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