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Chemistry / Physical and Chemical Changes

Chemistry / Physical and Chemical Changes

Crystals Have you noticed, changes happen everywhere and at all times ? All changes can be divided into two broad categories -Physical and Chemical.
Physical changes are the changes in physical properties that does not produce any new substances. These changes can be reversed like - melting of ice.
New substances are produced due to chemical changes.
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. It is represented by a chemical equation.
Characteristics of chemical reaction include: evolution of gas, change of color, formation of precipitates and change of state.
In this module we'll deal more about the types of chemical reactions, burning and combustion.

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Exercises
Lessons
Topics
  • Physical and Chemical Changes - SmartTest

    A Smart Test on Physical and Chemical Changes

    • Accessed by: 358 Students
    • Average Time: 00:04:45
    • Average Score: 50.47
    • Questions: 70
    • Introduction to Physical and Chemical Changes
    • Characteristics of Physical Change
    • Characteristics of Chemical Change
    • Conditions for a chemical change
    • Chemical reactions
    • Types of Chemical Reactions
    • Redox Reactions
    • Burning or Combustion
    • Importance of nitrogen in the atmosphere
    • Oxygen and carbon dioxide balance in the atmosphere
    • Review of Physical and chemical changes
  • Physical and Chemical Changes -- Summary

    Learnhive Lesson on Physical and Chemical Changes

    • Accessed by: 303 Students

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