Chemistry Vocab Review

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Across
  1. 2. elements that are poor conductors of heat and electricity; located on right side of periodic table
  2. 5. a number in front of the chemical formula
  3. 6. a substance made up of atoms of two or more different elements
  4. 7. an electrically neutral (uncharged) particle in the nucleus of an atom
  5. 10. a table of elements, arranged by atomic number, that shows the patterns in their properties
  6. 13. a positively charged particle in the nucleus of an atom
  7. 16. substances that are reacting in a chemical reaction; found on the left of a chemical equation
  8. 19. a type of mixture where different substances are visible
  9. 20. shells or "rings" around the nucleus of an atom where electrons are found
  10. 21. a number used to indicate the number of atoms in the formula for a compound
  11. 23. elements that are good conductors of electricity and heat; located on left side of periodic table
  12. 24. a pure substance that is made up of only one kind of atom and cannot be broken down
  13. 25. the smallest component of an element having the same chemical properties of the element
  14. 26. a change in a substance that does not involve a change in the appearance of the substance
  15. 27. a unique number for each element that equals the number of protons in an atom of that element
Down
  1. 1. the elements or compounds produced by a chemical reaction; found on the right of a chemical equation
  2. 3. a formula that gives the elements in a compound and the ratio (number) of atoms
  3. 4. a type of mixture that looks the same throughout
  4. 8. a negatively charged, fast moving particle found outside of the nucleus
  5. 9. a column going up and down on the periodic table
  6. 11. elements with properties that fall between those of metals and nonmetals; along the bold staircase
  7. 12. horizontal (left to right) row on the periodic table
  8. 14. the ease and speed with which an element combines, or reacts, with other elements and compounds
  9. 15. a one or two letter representation of an element
  10. 17. a change in matter that produces one or more new substances
  11. 18. number of electrons in the outer shell of an atom
  12. 22. number of protons and neutrons added together