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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Write the unbalanced equation for the reaction of hydrogen with oxygen to form water.
💡 Hint: Think about what the reactants are.
Question 2
Easy
Why is it necessary to balance chemical equations?
💡 Hint: Consider what happens to atoms during reactions.
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 the balanced form of the chemical equation H₂ + O₂ → H₂O?
- H₂ + O₂ → H₂O
- 2H₂ + O₂ → H₂O
- 2H₂ + O₂ → 2H₂O
💡 Hint: Check the number of atoms on each side.
Question 2
True or False: A balanced equation has different totals of atoms on the reactants and products sides.
- True
- False
💡 Hint: Think about what balancing means in equations.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Balance the following combustion reaction: C₅H₁₂ + O₂ → CO₂ + H₂O.
💡 Hint: Count and balance C, H, and O atoms systematically across the equation.
Question 2
Consider the equation SO₂ + O₂ → SO₃. Is this equation balanced? What would be the balanced form?
💡 Hint: Start by balancing sulfur and proceed to oxygen atoms.
Challenge and get performance evaluation