Matter

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Across
  1. 3. the creator of the plum pudding model
  2. 5. when electrons are lost in an atom
  3. 7. when protons are lost in an atom
  4. 9. a charged atom formed by the loss of one or more electrons or protons
  5. 11. __ model shows that an atom is a mostly empty space
  6. 14. He was an English chemist and physicist
  7. 16. a positively charged central core in a cell
  8. 19. having the same charge of a proton
  9. 20. a subatomic particle with a positive charge
Down
  1. 1. Different Substances
  2. 2. Niels_ created the theory for a hydrogen atom
  3. 4. A mixture of 2 or more elements
  4. 6. a property of an atom that shows the number of atoms in an element
  5. 8. rows in a periodic table
  6. 10. columns on a periodic table
  7. 12. a subatomic particle with a negative charge
  8. 13. having the same charge of an electron
  9. 15. The same as an electron but without a charge
  10. 17. A compound made up of hydrogen and oxygen
  11. 18. Basic units of matter