Chemistry Vocab Review - Semester 1

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Across
  1. 2. atoms of the same element that contain equal numbers of protons but different numbers of neutrons
  2. 4. a bond between a nonmetal and a nonmetal
  3. 5. a bond in a covalent compound where 2 pairs of electrons are shared
  4. 6. elements that are generally solid, shiny, malleable, and good conductors of heat and electricity
  5. 9. The rows in a periodic table that classify the elements by the number of atomic shells
  6. 15. any substance that cannot be broken into simpler substances
  7. 17. the smallest unit of matter
  8. 19. a measure of the size of an atom, and is generally defined as the distance from the nucleus to the outermost electron
  9. 20. a bond between a metal and a nonmetal
  10. 21. a law that states that energy cannot be created nor destroyed
  11. 23. columns on a periodic table that arrange the elements by the number of electrons that are in the outside shell
  12. 24. the transfer of thermal energy
  13. 27. subatomic particle that has mass but no charge
  14. 28. positively charged subatomic particle
Down
  1. 1. Elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors
  2. 3. the region surrounding the nucleus that contains electrons
  3. 7. a bond in a covalent compound where 3 pairs of electrons are shared
  4. 8. the energy required to remove an electron from an atom
  5. 10. subatomic particle that has a negative charge
  6. 11. the electrons located in the outermost energy level of an atom
  7. 12. the tendency of an atom to attract electrons and acquire a negative charge
  8. 13. a law that states that matter cannot be created nor destroyed
  9. 14. the total kinetic energy of all the atoms or molecules of that substance
  10. 16. the average kinetic energy of all the atoms or molecules of that substance
  11. 18. elements that are generally not shiny, are usually gases or brittle solids, are not malleable, and are poor conductors of heat and electricity
  12. 20. an atom with an electric charge due to the loss or gain of one or more electrons
  13. 22. a bond in a covalent compound where only 1 pair of electrons is shared between atoms
  14. 25. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table
  15. 26. contains protons and neutrons