In this lesson we will learn how to write chemical equations in a way that reflects the Law of Conservation of Mass.
By the end of this lesson you will be able to:
- Define the Law of Conservation of Mass.
- Explain how the Law of Conservation of Mass applies to chemical reactions.
- Write a balanced chemical equation.
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- The Law of Conservation of Mass states that matter is neither created nor destroyed.
- To reflect the conservation of mass in a chemical reaction, chemical equations need to be balanced.
- Equations are balanced by adding coefficients (numbers) in front of the chemical formulas of reactants and products.
- A balanced equation shows equal numbers of each type of atom on both sides of the equation.
- It reflects the ratios of each reactant and product involved in the reaction.
- Steps for writing a balanced chemical equation:
- Write the formula equation showing all reactants and products.
- Tally up the total numbers of each type of atom for both sides of the equation.
- Place coefficients in front of reactants and products until there are equal numbers of each type of atom on both sides of the equation.