Grade 9 Chemical Equations Worksheet
A worksheet for Grade 9 science students to practice balancing chemical equations, identifying reaction types, and understanding stoichiometry.
Includes
Standards
Topics
Chemical Equations: Grade 9 Science
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Read each question carefully and provide your answers in the spaces provided. Show all your work for calculations.
1. In a chemical equation, the substances on the left side of the arrow are called , and the substances on the right side are called .
2. The Law of Conservation of Mass states that mass is neither created nor during a chemical reaction.
3. A equation represents a chemical reaction using chemical formulas and symbols.
1. Which of the following represents a balanced chemical equation?
H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
H₂ + 2O₂ → H₂O
2H₂ + 2O₂ → H₂O
2. What type of reaction is represented by: A + B → AB?
Decomposition
Synthesis
Single displacement
Double displacement
Balance the following chemical equations:
1. N₂ + H₂ → NH₃
2. CH₄ + O₂ → CO₂ + H₂O
3. Al + O₂ → Al₂O₃
Identify the type of chemical reaction for each of the following equations (synthesis, decomposition, single displacement, double displacement, or combustion):
1. 2KClO₃ → 2KCl + 3O₂
2. HCl + NaOH → NaCl + H₂O
3. Zn + CuSO₄ → ZnSO₄ + Cu
1. When solid sodium reacts with chlorine gas, sodium chloride is formed. Write the balanced chemical equation for this reaction.
2. Methane (CH₄) burns in the presence of oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O). Write the balanced chemical equation for this combustion reaction.
Observe the image below, which depicts a chemical reaction. In your own words, describe what is happening in the image and what evidence suggests a chemical change has occurred.
