Basic Chemistry

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Across
  1. 4. Positively charged atom?
  2. 6. Molecules bond in which atoms share electrons?
  3. 9. Uncharged or neutral particles?
  4. 10. When two or more atoms combined chemically together it is called?
  5. 14. What is the name of chemical symbol Mg?
  6. 16. Location of the electrons?
  7. 17. Proton and electrons located in ?
  8. 18. How many electrons in the first shell that is close to nucleus?
  9. 19. Compounds formed by ionic bonding?
  10. 20. Anything that occupies space and has mass?
Down
  1. 1. Outermost shell in the atom?
  2. 2. The number of ______ is always equal to the number of electrons.
  3. 3. How many electrons can hold second shell?
  4. 5. First letter of a chemical symbol is always__________?
  5. 7. Charged particles are called?
  6. 8. Two or more different atoms bind together to form molecule?
  7. 11. Atom is the basic building block of all_____?
  8. 12. Chemical shorthand called atomic______?
  9. 13. Negatively charged ions?
  10. 15. Element that have same # of protons but different # of neutrons?