Chemistry C1- Atoms and Elements

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1. How do you find out how many neutrons there are in an atom given the atomic number and the mass number?

  • Take the atomic number away from the mass number.
  • Divide the mass number by the atomic number.
  • Take the mass number away from the atomic number.
  • Add the mass number and atomic number.
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2. Where is the nucleus in an atom?

  • In shells around the atom.
  • In the middle of an atom.
  • Nuclei aren't in atoms.
  • In the neutrons.

3. What is an element?

  • Elements are made from water.
  • Elements consist of one type of atom only.
  • An atom with two bonds.
  • An atom that isn't bonded to anything.

4. What is the symbol for Sodium?

  • Na
  • S
  • So
  • Ns

5. When do atoms share electrons?

  • In covalent bonding.
  • When there are free electrons.
  • In ionic bonding.
  • When they loose neutrons.

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