2 Write a simple equation by writing the name of each substance with its symbol or formula. 3 Check whether ... 5 Repeat steps 3 and 4 until the chemical equation is balanced.

Symbol equations are a quick way of representing chemical reactions. They show us what atoms are involved and how they are bonded together. Symbol equations always take the form, reactants → ...

fundamental chemistry could break down, making the formation of complex molecules like DNA impossible The cosmological ...