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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the first step in balancing a chemical equation?
💡 Hint: Think about what you start with before counting any atoms.
Question 2
Easy
In the equation H₂ + O₂ → H₂O, how many hydrogen atoms are on the left side?
💡 Hint: Look at the formula for hydrogen.
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 must be equal on both sides of a balanced chemical equation?
- Mass
- Number of Atoms
- Both
💡 Hint: It's about what we start with and what we end up with.
Question 2
Balancing chemical equations involves changing which part?
- True
- False
💡 Hint: What do you modify in an equation?
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Balance the following equation: C₃H₈ + O₂ → CO₂ + H₂O.
💡 Hint: Count how many carbons, hydrogens, and oxygens you have after balancing.
Question 2
Balance the reaction: P₄ + O₂ → P₂O₅
💡 Hint: Start with phosphorus, then balance oxygen last!
Challenge and get performance evaluation