Biology Crossword Puzzle

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Across
  1. 3. Positevly charged
  2. 5. electrons are not shared evenly over the covalent bond and the atoms involved have small partial charges resulting in what are called dipoles.
  3. 6. A basic part of a whole
  4. 8. A descriptive generalization about how some aspect of the natural world behaves under stated circumstances.
  5. 10. a testable statement about the relationship between two or more variables
  6. 14. The smallest particle of a substance that has all of the physical and chemical properties of that substance physical material from which something is made or which has discrete existence
  7. 15. any item or service you sell to serve a customer's need or want.
  8. 17. negatively charged
  9. 18. no electric charge
Down
  1. 1. one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with different atomic masses and physical properties
  2. 2. an atom or group of atoms in which the number of electron s is different from the number of protons The smallest particle of a substance that has all of the physical and chemical properties of that substance physical material from which something is made or which has discrete existence
  3. 4. any substance that increases the rate of a reaction without itself being consumed.
  4. 7. a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
  5. 9. any substance that has a defined composition
  6. 11. a substance made from two or more different elements that have been chemically joined
  7. 12. a substance that enters into and is altered in the course of a chemical reaction
  8. 13. anything that occupies space and has mass
  9. 16. A collection of facts from which conclusions may be drawn