1.2 Basic Chemistry

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Across
  1. 5. the basic unit of matter
  2. 7. the amount of material an object has
  3. 8. ions with opposite charges attract and join together
  4. 9. a molecule in which opposite ends have opposite electric charges
  5. 11. an atom or particle that has either positive or negative charge
  6. 12. ions and polar molecules (water loving)
  7. 13. particle with no charge
  8. 14. positively charged particle
  9. 17. a substance that is formed when atoms of two or more elements join together
  10. 19. a part of atom compose of protons and neutrons
  11. 20. the number of proton in the atom that identifies the element
Down
  1. 1. the total number of protons and neutrons
  2. 2. when two atoms share one or more pairs of electrons
  3. 3. substance that is formed in a chemical reaction
  4. 4. nonpolar molecules (water hating)
  5. 6. elements that differ only in the number of neutrons
  6. 10. anything that has mass and takes up space
  7. 15. substance that is used as ingredients
  8. 16. the smallest of substance that has all the properties of the substance
  9. 18. negatively charged particle