Abeka Physical Science Ch. 15

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Across
  1. 3. States that every chemical reaction causes a decrease in usable energy and an increase in entropy.
  2. 5. The scale that indirectly represents oxonium concentration using powers of 10 is the ____ scale.
  3. 9. Have one or more double bonds between carbon atoms.
  4. 11. How many Cl₂ molecules are needed to balance the following chemical equation? 6Na + __Cl₂ → 6NaCl
  5. 13. Contain the functional group -COOH.
  6. 14. Any ionic compound that does not contain a hydrogen ion or hydroxide ion.
  7. 16. This element forms more chemical compounds than all other elements combined.
  8. 18. A substance that alters the rate of a chemical reaction without being permanently changed by the reaction.
  9. 20. A lipid which is liquid at room temperature and contains double bonds between carbon atoms.
  10. 21. Produces electricity from a chemical reaction and cannot be run in reverse.
  11. 23. A reaction in which electrons are transferred between atoms.
  12. 24. The type of chemical reaction in which a compound breaks down.
  13. 25. Produces a chemical reaction from electricity and cannot be run in reverse.
  14. 26. One or more hydrogen atoms are replaced by -OH groups.
  15. 27. The kinetic energy necessary for molecules to chemically react.
Down
  1. 1. Relates the energy gained by a system to the energy lost by its surroundings.
  2. 2. Special proteins that initiate or regulate chemical reactions.
  3. 4. The general term for a chain of simple sugars.
  4. 5. The general term for a huge organic molecule composed of many smaller molecules linked together.
  5. 6. A reaction in which a strong acid reacts with a strong base to produce water and a salt.
  6. 7. The new substances produced by a chemical reaction.
  7. 8. Type of bond that links amino acids into proteins.
  8. 10. States that when a system at equilibrium is disturbed, the system will react to partially offset the disturbance.
  9. 12. Produces electricity from chemical reactants continually replenished from an outside source.
  10. 15. A number that indicates how many molecules or formula units of a substance are involved in a chemical reaction.
  11. 17. A chemical substance that forms hydroxide ions when dissolved in water.
  12. 19. Have a cyclic structure with delocalized electrons.
  13. 22. An atom that loses an electron in a reaction.