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.
A site to communicate HW and other information to the Wildcats who are learning chemistry with Mr. Mikulski!
