chemistry

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Across
  1. 5. across a periodic table is called
  2. 6. Bond were electrons are shared
  3. 9. SI prefix meaning one-thousandth
  4. 10. Smallest particle of an element
  5. 12. Type of bond formed from electron transfer
  6. 15. state of matter that means dissolved in water
  7. 16. symbol for the element used in pennies after 1982
  8. 17. two charge Charge of alkaline earth metals
  9. 19. Ionic compounds dissolved in water will create
  10. 20. A vertical column on the periodic table
Down
  1. 1. Gases Element family containing He, Ne, Ar
  2. 2. Family containing F, Cl, Br
  3. 3. Relationship: mass ÷ volume = ?
  4. 4. number of protons in an atom
  5. 6. Compound formed from copper(I) and hydroxide
  6. 7. Transitional metal that has a fixed charge of plus 2
  7. 8. Process of making equal numbers of atoms on both sides of an equation
  8. 11. the symbol for tin
  9. 13. Two or more forms of an element with different neutron numbers
  10. 14. The mass per unit volume
  11. 18. Unit for measuring volume in labs