Balancing Chemical Equations Worksheet
This worksheet provides practice problems for balancing chemical equations, a fundamental concept in Grade 10 Chemistry.
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Balancing Chemical Equations
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Balance each of the following chemical equations by adding coefficients where necessary. Remember, the number of atoms for each element must be equal on both sides of the equation.
1. N₂ + H₂ → NH₃
2. KClO₃ → KCl + O₂
3. NaCl + F₂ → NaF + Cl₂
4. H₂ + O₂ → H₂O
5. CH₄ + O₂ → CO₂ + H₂O
1. What does it mean for a chemical equation to be 'balanced'?
The number of molecules on both sides is equal.
The total mass of reactants equals the total mass of products.
The number of atoms of each element is the same on both sides.
The state symbols (s, l, g, aq) are correctly assigned.
2. What fundamental law of chemistry is satisfied by a balanced chemical equation?
Law of Definite Proportions
Law of Conservation of Mass
Law of Multiple Proportions
Law of Conservation of Energy
1. Explain why it is important to balance chemical equations. What would happen if equations were not balanced?
1. Coefficients in a chemical equation can be fractions.
True
False
2. Subscripts in chemical formulas can be changed to balance an equation.
True
False