Chemistry Midterm Review

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Across
  1. 2. solid to liquid phase change
  2. 3. mass per unit volume
  3. 6. electrons in a higher energy level configuration
  4. 7. point temperature where vapor pressure equals atmospheric pressure
  5. 11. amount of energy used to raise the temperature of 1 gram of a substance by 1 Kelvin
  6. 13. more than one element chemically combined
  7. 14. type of nuclear decay particle with a negative charge and no mass
  8. 16. separation technique used for heterogenous mixtures in different phases
  9. 18. as temperature of a gas increases, pressure____________
  10. 19. vertical columns on the periodic table
  11. 21. Rutherford's experiment which resulted in the discovery of the nucleus and the atom being mostly empty space
  12. 22. amount of time for half of an isotope to decay
  13. 23. building blocks of all matter
Down
  1. 1. colors produced when electrons fall from higher to lower energy levels and release light
  2. 4. reaction where energy is absorbed
  3. 5. a laboratory technique used to separate a mixture based on different boiling points
  4. 8. elements found in nature as two atoms bonded together
  5. 9. found within energy levels of an atom. Indicated by letters s,p,d,f
  6. 10. atoms which have the same amount of protons but different amount of neutrons
  7. 12. type of mixture where components are uniform throughout
  8. 15. attraction for outer electrons of a different atom
  9. 17. splitting of a heavy nucleus into smaller nuclei
  10. 20. conversion factor of 1,000