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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the formula H₂O represent?
💡 Hint: Think about what happens when you mix hydrogen and oxygen.
Question 2
Easy
What does the symbol 'O' stand for?
💡 Hint: It's an essential element for respiration.
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 H₂O stand for?
- 1 Hydrogen and 2 Oxygens
- 2 Hydrogen and 1 Oxygen
- 1 Hydrogen and 1 Oxygen
💡 Hint: Think about how many H's there are in water.
Question 2
True or False: The formula CO₂ contains one carbon atom.
- True
- False
💡 Hint: Look at the chemical symbols and their subscripts.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If you have 5 moles of H₂O, how many hydrogen atoms do you have in total?
💡 Hint: Remember to multiply the number of moles by hydrogen's subscript in H₂O.
Question 2
Given the formula C₁₂H₂₂O₁₁, how many hydrogen and oxygen atoms are present?
💡 Hint: Look closely at the formula to determine the number of atoms.
Challenge and get performance evaluation