Practice Change in Colour - 2.1 | Chapter 6: Chemical Reactions | ICSE Class 8 Chemistry
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Knowledge

2.1 - Change in Colour

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does a color change indicate in a chemical reaction?

💡 Hint: Think about whether substances change when there's color change.

Question 2

Easy

What color is copper sulfate solution?

💡 Hint: Recall the common color associated with copper compounds.

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 fading blue color in a chemical reaction indicate?

  • No reaction
  • Chemical reaction occurring
  • Physical change

💡 Hint: Think about what happens during the reaction!

Question 2

True or False: Color change can indicate whether a chemical reaction is happening.

  • True
  • False

💡 Hint: Recall the indicators of chemical reactions we've discussed.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

In an experiment, a student observes that the blue color of copper sulfate fades after adding an iron nail. Explain the chemical process happening at a molecular level and why color changes are significant.

💡 Hint: Consider the reactants and the products and how the molecular structures change.

Question 2

A scientist mixes two clear solutions that yield a bright orange precipitate. Discuss the role of color change in identifying the reaction and the products formed.

💡 Hint: Think about how the visibility of the product helps link back to the reactions that produced it.

Challenge and get performance evaluation