Friday, September 7, 2012

Friday, September 7, 2012

Sign up for Edline using directions you received in the mail (ask your parents if you haven't seen it). Homework will be available ONLY on Edline starting Monday!


Math
- Problem 2.1 Introducing Addition of Integers
You must show a number line (drawn with a ruler) for all number sentences in part A.1. See this example for proper graphing conventions. No homework stamps will be given for messy work done without a ruler!!!

You can find the problems and answers under Math Files on the Team C website (make sure to scroll down to correct your answers: BE HONEST and don't forget to re-do the wrong ones!) You DO NOT need to print it out --- just download it as a pdf so you can enlarge the view on your computer.


Science
- complete anything you haven't finished in your binder from pg. 1-18 (all handouts will be stamped for completion next week)
- copy down the following into your Class Conclusion for M&M Investigation #2 handout (pg. 20)



Claim: When M&Ms are put in waters of different temperatures, the one in hot water dissolves faster than other ones in waters that are not as hot.

Evidence: The second we dropped all three M&Ms inside the plates with water, the color on the M&M in the hot water already started to dissolve. It took the M&M in the room-temperature water about 10-15 seconds and the M&M in cold water about 30 seconds to start dissolving. By minute two, the M&M in cold water looked white because the color had faded, leaving the sugar coating. The room-temperature one had its sugar coating half dissolved. The hot water one was completely brown showing the chocolate core.

Reasoning: Heat melted the M&M fastest because the atoms in hot water move much faster, and therefore had the ability to disassemble the M&M’s molecules much faster.