Matter and Periodic Table review

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Across
  1. 3. Elements and ____ are the two types of pure substances.
  2. 6. The ______ ______ metals are radioactive and mostly mad-made elements.
  3. 7. The neutral subatomic particle in an atom.
  4. 8. A column on the periodic table.
  5. 9. Another name for a group on the periodic table because they have similar properties.
  6. 11. This salt former is liquid at room temperature.
  7. 12. When two or more types of matter are mixed together.
  8. 15. A liquid at room temperature with the chemical symbol Hg.
  9. 18. The _____ metals conduct electricity and heat well, an example of these elements would be Iron and Copper.
  10. 21. This is the mass found on the periodic table, the average of all the masses.
  11. 22. Poor conductors of electricity and heat, typically dull and many are found as gasses.
  12. 24. First group of elements that are very reactive and can explode when exposed to water.
  13. 25. This is the first element in the alkaline earth metal family.
  14. 30. Very reactive metals, not found freely in nature and the second column on the periodic table.
  15. 31. The electron ____ is where all of the electrons of an atom are found.
  16. 32. This is the state of matter most of the elements are found in at room temperature.
Down
  1. 1. This element belongs in the other metals and has an atomic number of 13.
  2. 2. This is what the periodic table is organized by.
  3. 4. This is the first element on the periodic table.
  4. 5. This is the alkali metal with the highest mass.
  5. 10. Gasses that do not easily form compounds.
  6. 13. The positive subatomic particle in an atom.
  7. 14. All of these are found on the periodic table.
  8. 16. Have properties of both metals and non-metals.
  9. 17. Good conductors of heat and electricity are shiny, ductile and malleable.
  10. 19. Where the protons and neutrons are found in an atom.
  11. 20. Salt former elements that have elements that exist in all three states of matter.
  12. 23. The ____ number is what we get when we add the protons and neutrons together.
  13. 26. Mercury and Bromine are the two elements found in this state at room temperature.
  14. 27. The negative sub atomic particle of an atom.
  15. 28. A row on the periodic table.
  16. 29. This is the state of matter that the noble gasses are found in at room temperature.