×

Learnhive Sign Up


By clicking on the above button you confirm that you are at least 13 years old and agree to our Terms of Service & Privacy Policy.
Already have a Learnhive account?
×

Chemistry / Water

Chemistry / Water

Water is one of the most precious resource on Earth and is necessary for all living beings. We use water for different purposes like drinking, cooking, bathing, washing and many more activities. Pure water is colorless, odorless and tasteless.
The molecular formula of water is H2O and its molecular weight 18.
Solution: Solution is a uniform mixture of the solute and solvent. The dissolved substance e.g. sugar, copper sulphate in a solution is called solute. The substance which dissolves in the solute e.g. water is called solvent.
The boiling point and freezing point of water changes with change in pressure and by adding solute.
Water contracts when cooled upto 4oC but cooling below this temperature it expands. This property helps insulation of heat for aquatic animals in polar regions.
Solution is a homogeneous mixture of two or more components whose composition may be gradually changed by changing the relative amount of components. The concentration of a solution is given as mass percent and volume percent.
This module also covers the chemical nature of water, test for water and measures to control water depletion.

Exercises
Lessons
Topics
Exercises
Lessons
Topics
  • Water - SmartTest

    Water

    • Accessed by: 375 Students
    • Average Time: 00:03:34
    • Average Score: 51.66
    • Questions: 70
    • Introduction to water
    • Properties of water
    • Physical States of water
    • Physical properties of water
    • Air dissolved in water
    • Solutions
    • Concentration of a solution
    • Crystals and Crystallisation
    • Water of Crystallisation
    • Causes of water pollution
    • Treatment of water pollution
    • Potable water
    • Purification of water
    • Chemical properties of water
    • Activity series of metals
    • Review of water
  • Water -- Summary

    Learnhive Lesson on Water

    • Accessed by: 357 Students

Image Credits

wikimedia.org

×

×

×

Learnhive Login

Some message