Chemical reactions - Chemical equations
3 important questions on Chemical reactions - Chemical equations
What rules do apply when balancing an equation
1. The number of atoms of each type is the same before and after the reaction
2. A coefficient is a whole number
3. The coefficient must be as small as possible
4. The index must not be changed
5. As with the index, a coefficient of 1 is left out
2. A coefficient is a whole number
3. The coefficient must be as small as possible
4. The index must not be changed
5. As with the index, a coefficient of 1 is left out
Step 1 of writing a chemical equation
Write the word equation
Step 4 of writing a chemical equation
Balance the equation by choosing coefficients for each molecular formula, so that the number of atoms of each type before and after the arrow is equal.
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