1 Write a word equation for the reaction. 2 Write a simple equation by writing the name of each substance with its symbol or formula. 3 Check whether the equation is balanced by counting the atoms of ...

Melting and freezing are both physical changes, which are often easy to reverse. To reverse this process, the water would need to be cooled enough until it freezes back into ice. This works because ...

The processes like crystallisation, boiling, vaporisation, burning of colour, melting point, hardness etc, are called physical changes. These are reversible in nature. The processes like ...