Only HW this week -- finish designing problems for final exam (at least four)

Today in class, after the test, I explained an assignment where students (that means you!) go through all their notes and create at least four multiple choice problems. I asked that you divide the back of a notes sheet into four boxes, so that you have a grid in the background and so that each problem won't be too complicated or big.

Pick problems that you know you can do, on material that you enjoyed, or that you think might be a challenge to your classmates. Don't stop at just four; you can submit two or three pages (8-12 problems). Each problem of yours that I select to be on the final will win you extra credit applied toward your final exam grade.

If you have any questions, first ask your classmates; then, if they can't answer your questions, give me a call at the number provided on your syllabus.

You must have the problems completed and ready to turn in on Monday at the start of class -- so treat it like any other HW assignment.

Practice for test tomorrow...

Here are a few practice problems for the test tomorrow; the answers can be found by clicking on the link at the end of this post:

Use this TABLE to answer the questions:

1) What state of matter is lead in at 320 degrees C? What state of matter would it be in if its temperature increased by 250 degrees C?

2) What state of matter is manganese in at 1300 degrees C? Would its state change if its temperature decreased by 400 degrees?

3) Oxygen at -160 (negative 160) degrees Celsius is in what state? How about if it got 40 degrees C colder?

Use the four equations we've studied in class to answer the last two questions:

4) The specific heat of a substance is 1.45. If a 200-gram sample of the substance starts out at 12 degrees C and then gains 3000 J of energy, what temperature will it end up at?

5) An unknown mass of lead (Cg = 0.13) loses 1500 J of energy, and in the process its temperature goes down to 15 degrees C from 35 degrees C. What is the mass of this sample?

Once you've tried all five out, click HERE to check your work.

HW#25 -- Finish specific heat problems sheet!!!

The specific heat problems sheet was supposed to be due today, but because I didn't give good enough notice that it was the HW assignment, I gave time in class today to finish it. I won't be seeing you guys again until Thursday due to the juniors testing, so you will need to bring that worksheet in COMPLETED on Thursday so we can grade it. Remember that the second half of Thursday's lesson will be the test on solid-liquid-gas transitions and on specific heat problems.

Also, today I gave a one-day extension on the "substance adventure" story. Basically, you have all of this evening and tonight to write a better paper and email it to me. If you were already happy with the paper you had sent me last week, then you don't need to send me an edited version; I'll simply grade the one I already have from you. Any paper not in my inbox tomorrow morning when I get up (aka, about 6 AM) will not be graded and you will receive a "missing" grade for it.

If you want more details about the "substance adventure" writing assignment, read back a few posts for my example story and the instructions...