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Questions and Answers
What happens when grapes get fermented?
What happens when grapes get fermented?
- They undergo a physical change to become softer.
- They undergo a chemical change to produce alcohol. (correct)
- They undergo a physical change to change color.
- They undergo a chemical change to produce sugar.
What happens when milk is left at room temperature during summers?
What happens when milk is left at room temperature during summers?
- It turns into yogurt due to a chemical change.
- It spoils due to a chemical change. (correct)
- It evaporates due to a physical change.
- It freezes due to a physical change.
What is the nature of the initial substance when a chemical change occurs?
What is the nature of the initial substance when a chemical change occurs?
- It has somewhat changed. (correct)
- It becomes lighter.
- It becomes denser.
- It remains the same.
What is the identity of the initial substance when a chemical change occurs?
What is the identity of the initial substance when a chemical change occurs?
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What do we observe when a magnesium ribbon is burned in air and the ash is collected?
What do we observe when a magnesium ribbon is burned in air and the ash is collected?
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