Atoms and Molecules

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Concept Map

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Textbook

Karnataka state textbook for class 8:Chapter 4- Atoms and molecules

Additional information

  1. This video explains about anatomy of an atom: Protons, Neutrons, and Electrons.


  1. Concept of valency know more about valency


Useful websites

1. To know about the atoms visit this webiste

2. Structure of atom - http://www.chem4kids.com/files/atom_structure

3. Atoms and Molecules - click here.

Reference Books

  1. Class 10th text book by Tamilnadu government- To download click here
  2. NCERT Text book chapter 3 - download

Teaching Outlines

  • Introduction to fundamental particles
  • Meaning of atom and molecule
  • Atomic mass and relative atomic mass meaning and problems
  • Molecule meaning(molecule of element and molecule of a compound)
  • Molecular mass and relative molecular mass concept and problems
  • Mole concept
  • Valency of an element
  • Percentage composition of an element and its numerical problems

Concept 1. Atomic mass and relative atomic mass.

Learning objectives

After the completion of this concept learner's will able to

  • define atomic mass
  • identify the atomic mass of an given element from the periodic table
  • explain the meaning of relative atomic mass
  • solve the problems on relative atomic mass

Notes for teachers

These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.

Activity No #

  • Estimated Time
  • Materials/ Resources needed
  • Prerequisites/Instructions, if any
  • Multimedia resources
  • Website interactives/ links/ simulations
  • Process (How to do the activity)
  • Developmental Questions (What discussion questions)
  • Evaluation (Questions for assessment of the child)
  • Question Corner

Activity No #

  • Estimated Time
  • Materials/ Resources needed
  • Prerequisites/Instructions, if any
  • Multimedia resources
  • Website interactives/ links/ simulations
  • Process (How to do the activity)
  • Developmental Questions (What discussion questions)
  • Evaluation (Questions for assessment of the child)
  • Question Corner

Concept #

Learning objectives

Notes for teachers

These are short notes that the teacher wants to share about the concept, any locally relevant information, specific instructions on what kind of methodology used and common misconceptions/mistakes.

Activity No #

  • Estimated Time
  • Materials/ Resources needed
  • Prerequisites/Instructions, if any
  • Multimedia resources
  • Website interactives/ links/ simulations
  • Process (How to do the activity)
  • Developmental Questions (What discussion questions)
  • Evaluation (Questions for assessment of the child)
  • Question Corner

Activity No #

  • Estimated Time
  • Materials/ Resources needed
  • Prerequisites/Instructions, if any
  • Multimedia resources
  • Website interactives/ links/ simulations
  • Process (How to do the activity)
  • Developmental Questions (What discussion questions)
  • Evaluation (Questions for assessment of the child)
  • Question Corner

Project Ideas

Atoms and Molecules-. They can be used as part of a class discussion, as an essay topic, or as a student project idea.

Fun corner