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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a chemical equation?
💡 Hint: Think of it as a sentence in chemistry.
Question 2
Easy
Define reactants.
💡 Hint: Where do they appear in a chemical reaction?
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 are reactants in a chemical equation?
- The substances that form after a reaction
- The substances that undergo the reaction
- The total mass of substances
💡 Hint: Think about what you start with.
Question 2
A balanced equation has equal atoms for each element on both sides.
- True
- False
💡 Hint: What does the law say about mass?
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: Start by balancing carbon, then hydrogen, then oxygen last.
Question 2
Write both a word and symbolic equation for the reaction of calcium with water to form calcium hydroxide and hydrogen gas.
💡 Hint: Think about the products formed from the reactants.
Challenge and get performance evaluation