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Questions and Answers
Which of the following is an example of a chemical change?
Which of the following is an example of a chemical change?
- Milk left at room temperature during summers
- Grapes getting fermented (correct)
- Food getting digested in our body
- An iron tawa/pan/nail left exposed to humid atmosphere
What happens when food is cooked?
What happens when food is cooked?
- The food becomes inedible
- A physical change occurs
- A chemical change occurs (correct)
- The nature and identity of the food remain the same
What is a chemical reaction?
What is a chemical reaction?
- A change in the chemical properties of a substance (correct)
- A change in the physical properties of a substance
- A change in both the physical and chemical properties of a substance
- A change in the state of matter
How do we know that a chemical reaction has taken place?
How do we know that a chemical reaction has taken place?
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What is the difference between a physical change and a chemical change?
What is the difference between a physical change and a chemical change?
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Which substance would you suggest as a remedy for acidity after overeating?
Which substance would you suggest as a remedy for acidity after overeating?
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Which taste is associated with acids?
Which taste is associated with acids?
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Which taste is associated with bases?
Which taste is associated with bases?
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What happens to the color of blue litmus paper when it comes in contact with an acid?
What happens to the color of blue litmus paper when it comes in contact with an acid?
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What happens to the color of red litmus paper when it comes in contact with a base?
What happens to the color of red litmus paper when it comes in contact with a base?
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