Unit 3 Vocabulary

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Across
  1. 2. When dissolved in water, their molecules break apart and release hydroxide ions
  2. 4. A calculation we use to find the number of moles of solute per liter of solution. Enables us to prepare solutions of a specific concentrations.
  3. 6. A bond formed by the attractive force between any molecule in which hydrogen is covalently bound to a highly electronegative element. What allows water to be cohesive, adhesive, have high surface tension, and be the universal solvent.
  4. 8. What state of matter is the least dense for water?
  5. 12. A chemical reaction in which hydrogen ions from an acid react with hydroxide ions from a base to produce water molecules
  6. 13. The _____ point is the temperature at which a liquids vapor pressure equals the air pressure.
  7. 16. A bond caused by the sharing of electrons and between two nonmetals. Holds the hydrogens and oxygen of water together in water.
  8. 18. When dissolved in water, their molecules break apart and release hydrogen ions
  9. 19. A type of heat that is required to create a phase change without a change in temperature.
  10. 20. Surface ____ is an inward force or pull that tends to minimize the surface area of a liquid.
  11. 21. The process of forming ions in water
Down
  1. 1. The ____ point is the temperature at which a substance changes from a solid to a liquid.
  2. 3. A type of change the is not easily reversable and results in a new substance
  3. 5. A change that does not affect the chemical makeup. Changes size, shape, or texture.
  4. 7. Are molecules with a clear division of electrical charges. Opposites attract!
  5. 9. A substance's mass per unit of volume
  6. 10. The measure of the amount of a substance in a given unit of volume. We can test this for an acid through titration.
  7. 11. A type of heat needed to change 1 gram of a substance from a solid to a liquid.
  8. 14. a phase change from a solid to a gas. ex: dry ice.
  9. 15. The changing of the characteristics of proteins by changing the molecular shape. Done with heat, acids, or by mixing.
  10. 17. A type of heat required to change 1 gram of a substance from a liquid to a gas.