Chemistry Final

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Across
  1. 2. Valence electrons for Aluminum
  2. 7. Elements that are usually brittle, non-conductive, and lack metallic luster
  3. 10. An atom or molecule with a net electrical charge due to the loss or gain of electrons
  4. 11. A reaction where one element replaces another in a compound
  5. 12. A type of chemical bond formed between oppositely charged ions
  6. 14. Atoms of the same element with different numbers of neutrons
  7. 16. A proposed explanation based on evidence, used as a starting point for further investigation
  8. 18. The sum of protons and neutrons in an atom's nucleus
  9. 19. A type of chemical bond where atoms share electrons
  10. 21. The number of valence electrons Bromine wants to gain
  11. 24. Elements with properties intermediate between metals and nonmetals
  12. 26. The tendency of an atom to attract electrons in a chemical bond
  13. 27. A neutral subatomic particle found in the nucleus of an atom
  14. 28. A group of atoms bonded together, representing the smallest unit of a chemical compound
  15. 29. A negatively charged subatomic particle that orbits the nucleus of an atom
Down
  1. 1. Elements that are typically shiny, conductive, and malleable
  2. 3. A chemical reaction where two or more substances combine to form a single product
  3. 4. The process of removing an electron from an atom to form an ion
  4. 5. The distance from the nucleus of an atom to the outermost electron
  5. 6. A reaction where two compounds exchange ions to form two new compounds
  6. 8. A pure substance made of only one type of atom
  7. 9. The number of protons in the nucleus of an atom, defining the element
  8. 13. The group with two valence electrons
  9. 15. The electrical property of a particle, which can be positive, negative, or neutral
  10. 17. A positively charged subatomic particle found in the nucleus of an atom
  11. 19. A chemical reaction involving oxygen that produces energy in the form of heat and light
  12. 20. The smallest unit of matter that retains the properties of an element
  13. 22. A chemical reaction where a single compound breaks down into two or more simpler substances
  14. 23. The electrons in the outermost shell of an atom, involved in chemical bonding
  15. 25. A mixture where the components are not uniform and can be distinguished easily