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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What do we call substances that undergo a chemical reaction?
💡 Hint: What comes before the arrow in a chemical equation?
Question 2
Easy
Write a word equation for the reaction where sodium and chlorine produce sodium chloride.
💡 Hint: Think about the names of the elements involved.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is a word equation?
- Uses chemical formulas
- Uses names of substances
- Represents reactions visually
💡 Hint: Think about how you would verbally describe a reaction.
Question 2
True or False: The Law of Conservation of Mass states that mass can be created or destroyed in a reaction.
- True
- False
💡 Hint: What happens to the atoms during a reaction?
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Balance the reaction: C₄H₁₀ + O₂ → CO₂ + H₂O
💡 Hint: Start by balancing carbon, then hydrogen, and finish with oxygen.
Question 2
Given the reaction N₂ + H₂ → NH₃, write a balanced equation and explain each step in your balancing process.
💡 Hint: Focus on one element type at a time before verifying all.
Challenge and get performance evaluation