Introduction
Chapter Name : States Of Matter |
Sub Topic Code : 102_11_05_01_01 |
Topic Name : Introduction |
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Sub Topic Name : Introduction |
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Introduction
• States of matter depend upon the intermolecular forces, molecular interactions and the effect of thermal energy on the movement of molecules. • State of matter does not change the chemical properties of matter but it has an effect on the rate of chemical reaction. • Physical properties differ between the states of matter.
Pre-Requisites:
electron gain enthalpy, ionization energy, electronic configuration, molecule, state of matter
Activity:
Rust – formation of iron oxide on the surface of metals such as iron takes a long time. As it takes time for the Iron to react with water and air to form rust.
Real Life Question:
Does a single molecule of water boil or freezes?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| State of matter | It is the physical condition of the substance. E.g. solid, liquid or gas. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Matchstick | A matchstick burns fast as the solid particles on the matchstick react fast with the solid particles on the matchbox. |
Real life uses :
Lighting a matchstick
Places to visit :
Garage, roof, kitchen
Practical examples around us
| Examples | Explainations |
|---|---|
| Rust | Rust is formed when iron reacts water and air forming iron oxide. |
What you learn in Theory:
Rate of Chemical reactions are determined by the states of the reactants. Physical properties differ between the different states of matter although chemical composition remains the same.
What you learn in Practice:
Substances do not react unless they find the appropriate reactant in the right state. (gas, liquid, solid).