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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define a molecule.
💡 Hint: Think about what makes up a compound.
Question 2
Easy
What does atomicity represent?
💡 Hint: Consider how many atoms combine to form a molecule.
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 molecule?
- A single atom
- A combination of different compounds
- A group of two or more atoms
💡 Hint: Remember the definition and think of examples.
Question 2
True or False: A compound's properties are the same as its constituent elements.
- True
- False
💡 Hint: Consider how compounds are made distinct.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given the atomic masses: hydrogen = 1u, nitrogen = 14u, calculate the molecular mass of ammonia (NH3).
💡 Hint: Add together the contributions from each atom in NH3.
Question 2
Explain how the law of conservation of mass applies when forming a chemical compound from its elements.
💡 Hint: Think of a balanced equation and assess the weight before and after reactions.
Challenge and get performance evaluation