2 Write a simple equation by writing the name of ... 5 Repeat steps 3 and 4 until the chemical equation is balanced.

Melting and freezing are both physical changes, which are often easy to reverse ... in the middle of the word equation to show that a reaction has occurred. Chemical reactions happen all around ...

Balancing of simple chemical equations. Symbol – definition; symbols of the elements used often. Valency - definition; hydrogen combination and number of valence electrons of the metals and non ...