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What is the principle behind the law of conservation of mass?

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Question: What is the principle behind the law of conservation of mass?

Options:

  1. Mass can be created
  2. Mass can be destroyed
  3. Mass is constant in chemical reactions
  4. Mass is variable in reactions

Correct Answer: Mass is constant in chemical reactions

Solution: 

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

What is the principle behind the law of conservation of mass?

Practice Questions

Q1
What is the principle behind the law of conservation of mass?
  1. Mass can be created
  2. Mass can be destroyed
  3. Mass is constant in chemical reactions
  4. Mass is variable in reactions

Questions & Step-by-Step Solutions

What is the principle behind the law of conservation of mass?
  • Step 1: Understand that mass is the amount of matter in an object.
  • Step 2: Recognize that in a chemical reaction, substances change into new substances.
  • Step 3: Remember that during this change, the total mass of the substances before the reaction is equal to the total mass after the reaction.
  • Step 4: Conclude that since mass is not lost or gained, it is conserved.
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