Chemical Reactions and Equations
Showing 1–10 of 81 questionsPage 1 of 9
1 Mark
What is the purpose of balancing a chemical equation?
1 Mark
What type of reaction is represented by the equation: 2Na + Cl2 → 2NaCl?
1 Mark
What is the difference between a physical change and a chemical change?
1 Mark
What is the role of a catalyst in a chemical reaction?
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What is the law of conservation of mass?
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What is the significance of writing the state of matter in a chemical equation?
1 Mark
What is the purpose of using an arrow in a chemical equation?
1 Mark
What is the difference between a combination reaction and a decomposition reaction?
1 Mark
What is the role of a spectator ion in a chemical reaction?
1 Mark
What is the difference between a reversible reaction and an irreversible reaction?
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