Other questions in this quiz

2. what does each group[a vertical column] contain?

  • elements with 12 protons
  • elements
  • elements with similar properties
  • elements with different properties

3. what is an element?

  • a substance made of compounds
  • a substance that is made of only one type of atom
  • a substance made of two types of atoms
  • a mixture of different atoms

4. what charge is an atom

  • negative=-1
  • 2 decibels=2
  • neutral=0
  • positive=+1

5. atoms have a small central ...

  • electron
  • protons
  • nucleus
  • cell

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