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SS1: CHEMISTRY - 2ND TERM

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  1. Kinetic Theory of Matter | Week 1
    3 Topics
    |
    1 Quiz
  2. Kinetic Theory of Matter & Gas Laws I | Week 2
    3 Topics
    |
    1 Quiz
  3. Gas Laws II | Week 3
    3 Topics
    |
    1 Quiz
  4. Gas Laws III | Week 4
    3 Topics
    |
    1 Quiz
  5. Gas Laws IV | Week 5
    3 Topics
    |
    1 Quiz
  6. Mole Concept | Week 6
    5 Topics
    |
    1 Quiz
  7. Acid, Bases and Salts I | Week 7
    7 Topics
    |
    1 Quiz
  8. Acid, Bases and Salts II | Week 8
    6 Topics
    |
    2 Quizzes
  9. Acid, Bases and Salts III | Week 9
    3 Topics
    |
    2 Quizzes
  10. Acid, Bases and Salts IV | Week 10
    4 Topics
    |
    1 Quiz
  11. Acid, Bases and Salts V | Week 11
    5 Topics
    |
    1 Quiz



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Topic Content:

  • States of Matter
  • Properties of Solid, Liquid and Gases

Matter is made up of tiny particles such as atoms, molecules and ions. These particles are continually moving, so they possess kinetic energy.

The constant motion of the discrete particles of matter forms the basis for the kinetic molecular theory of matter.

States of Matter:

Matter exists in three physical states: Solid, Liquid and Gas. 

A solid has a definite shape, the liquid takes the shape of its container and gas has no shape.

Matter can change from one state to another i.e from solid to liquid and from liquid to gas.

Water is the most common example of a substance undergoing a change of state.

\( ice \underset{cool}{\overset{\overset{heat}{O^o C}}{\rightleftharpoons}} water\underset{cool}{\overset{\overset{heat}{100^o C}}{\rightleftharpoons}}steam \)

Solid state:

In a solid state, the molecules are very close together and their movement is restricted. This makes solids have a fixed shape. The cohesive forces binding the solids are very strong. Solids also have definite volume and are not easily compressed.

 

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