Chemistry Unit 1

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1. Why is there an equal amount of protons and electrons?

  • because atoms are neutral so it must have an equal amount of each other so they cancel out the charges
  • Because the protons are negative and so are the electrons
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Other questions in this quiz

2. The mass number is an equal amount to the.......

  • amount of electrons
  • Amount of protons
  • amount of nuetrons

3. How do you work out the rate of a reaction?

  • change in temperature multiplied by volume
  • change in volume or mass divided by change in time
  • change in time divided by change in volume or mass

4. What is the charge of an Electron?

  • no charge
  • Negative
  • positive

5. If the Mass number of sodium is 23 and the atomic number is 11, how many neutrons are there?

  • 12
  • 34
  • 13
  • 18


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