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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens when magnesium burns in the air?
💡 Hint: Think about the products of burning metals.
Question 2
Easy
What is a chemical reaction?
💡 Hint: It involves changes in substances.
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 does a skeletal equation show?
- Only products
- Only reactants
- Chemical symbols and formulas
💡 Hint: Think of the simplest representation of a reaction.
Question 2
True or False: Chemical equations must always be balanced.
- True
- False
💡 Hint: Remember the law of conservation.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Balance the equation for the combustion of propane: C3H8 + O2 → CO2 + H2O.
💡 Hint: Use the hit-and-trial method to balance each element.
Question 2
Describe in detail the process of balancing a skeletal reaction, then perform it for: Fe + O2 → Fe2O3.
💡 Hint: Check reactants against products for balance.
Challenge and get performance evaluation