1. $$$ Quiz $$$ States of Matter

2. Smallest group of particles that retains shape of crystal. Unit cell

3. Which particles in a liquid evaporate? The particles with the highest KE

4. True or False? Molecules in a liquid move, but only from a fixed point. False, true for solids

5. What is the difference between an amorphous and crystalline solid? Amorphous is disordered Crystal is ordered

6. True or False. Water has a relatively high vapor pressure. False

7. Why does water have a low vapor pressure? Hydrogen bonding holds water molecules back from evaporating

8. What are the bonds called between an oxygen and hydrogen atom in one molecule of water? Polar covalent bond

9. The bonds between adjacent water molecules are called _______? Hydrogen bonds

10. What is the name for a solid that is dissolved in a solution? Solute

11. What is the name for a liquid that does the dissolving in a solution? Solvent

12. It takes a lot of energy to melt ice. Why? Hydrogen bonding creates extra bond energy

13. A solute plus a solvent gives a _______. Solution

14. What type of compounds are always electrolytes? Ionic compounds

15. Which of the following compounds is not an electolyte? LiBr, CF 4, RbCl 2, CsCl CF 4

16. What does the term like dissolves like mean when a chemist uses it? Polar solutes are dissolved (soluble) by polar solvents Nonpolar solutes are dissolved (soluble) in nonpolar solvents

17. What are the two types of heterogeneous aqueous systems? Colloids and Suspensions

18. What is a more common term for a homogeneous aqueous system? Solution

19. As individual solute ions break away from a crystal, the negatively and positively charged ions become surrounded by solvent molecules. What process is being described? Solvation

20. True or False. The structure of ice is an irregular closed framework of water molecules arranged like a honeycomb. False, regular open

21. A substance that interferes with the hydrogen bonding in water is known as a(n) ________. Surfactant

22. Many unique and important properties of water result from ________. Hydrogen bonding

23. Colloids, solutions, or suspensions. Which of these exhibits the Tyndall effect? Colloids and suspensions

24. What is an emulsion? A colloid formed when two liquids are mixed together.

25. Compare and contrast solutions, colloids, and suspensions based on particle size? Solutions – less than 1 nm Colloids – between 1 nm – 1000 nm Suspensions – greater than 1000 nm

26. Ionized gas. Plasma

27. Describe sublimation. Going from solid directly to gas

28. Describe condensation. Going from gas to liquid

29. Describe deposition. Going from gas directly to solid

30. Describe vaporization. Going from liquid to gas.

31. Heating/Cooling Curve

33. Phase Diagram of H 2 O Water Vapor <---Condensation Vaporization ---> Water Ice <---Melting Freezing---> Triple Point <---Deposition Sublimation--->