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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is one indicator of a chemical reaction?
💡 Hint: Think about what happens when an antacid is dropped in water.
Question 2
Easy
What do we call a solid that forms from a liquid solution during a chemical reaction?
💡 Hint: This is often cloudy at first before settling.
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 sign of a chemical reaction?
- Formation of gas
- Change of state
- Physical mix
💡 Hint: Consider something you might see in a fizzy drink.
Question 2
True or False: A precipitate is always visible immediately when two solutions are mixed.
- True
- False
💡 Hint: Think about your observations in the lab or kitchen.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You notice a metal object is getting warmer to touch while it reacts with an acid. Explain the type of chemical reaction that might be taking place.
💡 Hint: Think about reactions involving acids and metals.
Question 2
During a lab experiment, you mix two colorless solutions, and a yellow solid develops after several minutes. How would you report your observation regarding the chemical changes?
💡 Hint: Consider the characteristics of precipitate formation.
Challenge and get performance evaluation