10 Questions
What happens when food is cooked?
A chemical change occurs
Which of the following situations is an example of a chemical change?
Grapes getting fermented
How do we know that a chemical reaction has taken place?
All of the above
What is the difference between a physical change and a chemical change?
Physical changes involve a change in the state of matter, while chemical changes involve a change in the composition of matter
What is the main purpose of the activities mentioned in the text?
To explain the concept of chemical reactions
Which of the following is NOT an example of a chemical change?
An iron tawa/pan/nail left exposed to humid atmosphere
What is the main difference between a physical change and a chemical change?
Physical changes involve a change in the state of matter, while chemical changes involve a change in the composition of matter
What is the purpose of performing activities to observe chemical reactions?
To determine the nature and identity of the initial substance
What is the teacher's role in Activity 1.1 mentioned in the text?
To assist the students in performing the activity
What is the definition of a chemical reaction?
A change in the composition of matter
Test your knowledge on chemical reactions and equations with this quiz! Explore how milk reacts when left at room temperature, what happens when an iron tawa is exposed to humid atmosphere, and more.
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