ch10 rev
IN OUR LAB:
We heated water; once it reached _____degrees C its temperature did not go up, even when we were heating it. This is because the heat was being used to change ____ to ____. When we plotted this information on a graph, we could see a ___________ that indicated the phase change. When water boils, the bubbles are water _____. Many people think the bubbles are _________ and __________; if that were true, it would be dangerous to boil water!
When we cooled water we used a salt and ice. Salt ________ the melting pt of water; the salt ice mixture reached about ________ degrees C. When we put the test tube of water in this bath, the temp went down and the graph formed a _________ at ________ degrees C; this showed us the ___________ pt of water.
Paradiclorobenzene is a ________ at room conditions, but a _________ at 95 degrees C.
Its uses include ________________ and ______________________. The temperature went down the graph made a __________at _______degrees C; this showed us the _____________pt for paradiclorobenzene. Freezing point is always _________ the Melting pt.
What does kinetic mean? What is the main idea in kinetic theory?
What are some properties of gases that can be explained by kinetic theory? Use kinetic theory to explain these properties.
Sketch an atomic view of a beaker with Iron metal and oxygen gas in it.
Explain how ice keeps drinks cool.
How does your body keep cool on a hot day? Why does it work so well?
1-5 Using the graph above, indicate the Ti, Tf, Bp, mp, fp
6-10 Using the graph above, indicate the state of matter found
17 Is it possible to remove heat without temp decreasing? If so, give evidence.
18 Give an example of how heat of fusion and vaporization is used everyday,
20 Given that the Hfus of water is 6Kj/mol and the Hvap of water is 41Kj/mole, would heat be added or removed to change 50g of ice to water? How much heat? (rchem skip how much)
21 (know: 6 phase changes*, compare s,l,g) What type of phase change is frost?*
22 Which phase changes require energy to be added?
23 What is the most ordered phase?
24 What phase(s) is(are) fluid?__________________________________________
25- Define these terms; melting pt, boiling pt, triple pt, critical temp, heat of fusion & vaporization, sublimation, volatile
26 What does kinetic mean?
27 explain these properties of gases using kinetic theory;
a. low density
b. diffusion
c. compressible
28a(tables) balance first! then fill in missing amounts on table A and B
N2 + H2 => NH3
What is the limiting reactant? What mass of excess reactant is left over?
standard molar volume is ________L at _______. 48g of methane (CH4) would occupy _____ L at Standard conditions and pressure.
29 a. If 20g of butane (C4H10) was mixed with an unlimited amount of oxygen and ignited what would be the limiting reactant? What mass of water would result? What volume of carbon dioxide would result ?
b. honors only...What if the above reaction were done with 26g of butane and 96g of oxygen, what would be the limiting reactant? What mass of water would result? What volume of carbon dioxide would result ? (all volumes at stp) How much excess reactant is left unreacted?
11-16 Using the graph below, find the triple pt T, triple pt P, normal mp,
normal bp, critical T, critical P; points will not be labeled on the test!
