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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What are reactants in a chemical reaction?
💡 Hint: Think about what you begin with before the reaction occurs.
Question 2
Easy
Write the skeletal equation for the formation of water from hydrogen and oxygen.
💡 Hint: Combine two hydrogen atoms and one oxygen atom.
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 balanced equation?
- An equation where the mass is not conserved
- An equation where the number of atoms on both sides is equal
- An equation with random coefficients
💡 Hint: Look at how balancing is done.
Question 2
The reaction 2H₂ + O₂ → 2H₂O is balanced. True or False?
- True
- False
💡 Hint: Check the hydrogen and oxygen counts.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Balance the equation Fe + O₂ → Fe₂O₃ and explain the logic behind your balancing.
💡 Hint: Start with the most complex molecule first.
Question 2
Given the unbalanced equation Mg + HCl → MgCl₂ + H₂, balance the equation and explain your steps.
💡 Hint: Look at the number of hydrogen atoms.
Challenge and get performance evaluation