Cycle 2 Exam Review

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Across
  1. 1. The process of a substance undergoing a chemical change
  2. 5. A way to write compounds so we can see how many of each type of atom are present
  3. 7. A positively charged subatomic particle located in the nucleus of an atom
  4. 10. The mass of an atom, which is equal to the total number of protons and neutrons
  5. 12. A chemical bond between a metal and a non-metal in which one atom “gives” an electron and the other “takes” an electron
  6. 14. A negatively-charged subatomic particle located outside of the nucleus
  7. 15. A chemical reaction in which 2 substances combine to produce 1 new substance
  8. 16. A charged atom with an unequal number of protons and electrons
  9. 17. A row on the periodic table
  10. 19. A pure substance composed of the same type of atom throughout
  11. 20. Electrons in the outermost energy level
  12. 22. A column on the periodic table
  13. 23. A chemical bond between nonmetals in which electrons are shared
Down
  1. 2. The area surrounding the nucleus of an atom
  2. 3. The starting substances before the chemical reaction takes place
  3. 4. The substances that exist after a chemical reaction takes place
  4. 6. Smallest unit of matter, consists of a nucleus and electron cloud
  5. 8. A written way to express a chemical reaction
  6. 9. A substance made of 2 or more elements bonded together
  7. 11. The number of protons in one atom
  8. 13. A chemical reaction in which a substance is broken down into 2 or more new substances
  9. 18. The positively charged region in the center of an atom
  10. 21. A neutrally charged subatomic particle located in the nucleus of an atom