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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 start with in a recipe.
Question 2
Easy
Write the word equation for the combustion of propane (C₃H₈).
💡 Hint: Remember the products of combustion!
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
Which of the following represents reactants in a chemical equation?
- Substances formed
- Substances present before reaction
- Coefficients
💡 Hint: Think about what goes into a recipe.
Question 2
True or False: The products of combustion reactions are always carbon dioxide and water.
- True
- False
💡 Hint: Consider the products of burning fuels.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A sample contains 10 grams of water (H₂O). How many moles of hydrogen gas (H₂) would be required to produce this amount of water?
💡 Hint: Consider the molar masses and stoichiometric relationships.
Question 2
If 5 moles of aluminum (Al) react with excess oxygen (O₂) to form aluminum oxide (Al₂O₃), write the balanced equation and determine the grams of Al₂O₃ produced.
💡 Hint: Make sure to balance the equation correctly first.
Challenge and get performance evaluation