Ch 2A Final Exam Review

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Across
  1. 2. Anything that has mass and occupies space.
  2. 5. Synthesis chemical reactions are building processes. Another term for a "building process" is an ________ process.
  3. 6. Most atoms desire ________ electrons in their valence shell.
  4. 9. These subatomic particles carry a negative charge and have virtually no weight.
  5. 10. All elements are made up of ___________, which are the unique building blocks for each element.
  6. 11. C6H12O6 is an example of a _______ because it has 2 or more DIFFERENT kinds of atoms bound together
  7. 13. Blood is an example of this type of mixture?
  8. 16. The ____ shell is the outermost electron shell.
  9. 18. One of the two forms of energy, this term refers to energy in action (or in movement).
  10. 19. State of matter with changeable shape and definite volume.
  11. 22. The term meaning the capacity to do work or put matter into motion.
  12. 23. These bonds are more like "attractive forces" between the positive portion of a polar water molecule and the negative polar portion of another.
  13. 24. These bonds form when atoms share electrons.
  14. 25. This term refers to structural variations of the same element.
Down
  1. 1. Chemical reactions that give off energy during the course of the reaction are described with this term.
  2. 3. When an atom gives away an electron, it takes on a positive charge and is called a(n) _______.
  3. 4. Out of the 3 types of mixtures, which one is homogenous?
  4. 7. The atomic number represents the number of _________ in the nucleus of an atom.
  5. 8. Your answer to #25 have the same number of protons, but different numbers of _________.
  6. 12. Carbon, __________, hydrogen, and nitrogen make up 96% of the body.
  7. 14. This type of energy results from moving charged particles.
  8. 15. These molecules increase the rate of a reaction without being chemically changed or becoming part of the product. Enzymes are an example of these within living organisms.
  9. 17. Unequal sharing of electrons between 2 atoms leads to the formation of _______ covalent bonds.
  10. 20. These are the strongest chemical bonds.
  11. 21. Protons and neutrons make up this portion of an atom.