Chapter 2 Chemistry

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Across
  1. 2. A negatively charged ion
  2. 4. When the electrons are shared equally between two atoms
  3. 7. When electrons are unequally shared between two atoms
  4. 8. Two atomic forms of an element that differ in the amount of neutrons
  5. 10. The smallest unit of matter
  6. 13. Two or more atoms covalently bonded
  7. 14. A substance consisting of 2 or more elements in a fixed ratio
  8. 16. What organisms are composed of, anything that has mass and takes up space
  9. 17. The type of bond where a hydrogen atom is covalently bonded to two electronegative atoms
  10. 19. An atom with positive charge
  11. 20. The clinging of one substance to another
Down
  1. 1. The type of electron that is in the electron shell
  2. 3. A positively charged ion
  3. 5. A substance that cannot be broken down any further
  4. 6. When one electron was stripped from its atom and it now has a negativeor positive charge
  5. 9. An atom with negative charge
  6. 11. the type of bond that occurs when two atoms are sharing electrons
  7. 12. An atom with neutral charge
  8. 15. The outermost layer of an electron
  9. 18. The capacity to cause change