The equation for question 70 is

    NaHCO3 --> H2O + CO2 + Na2CO3

You have a quiz coming on Thursday, 11/17.  The quiz will cover mole conversions, empirical formula, and writing chemical equations.

Your first chance to take the 100% test will be Monday, 10/17.  You will get 8 chemicals where you have to write the formula, and 8 chemicals where you have to write the name.  The link below has some pre-made flashcards you can print to help memorize the polyatomic ions.

http://www.studystack.com/flashcard-552122

You can use the flashcards online or you can print them out using the print icon at the bottom.  I like the business layout for flashcards...just print double sided and b

You've got a test coming 10/25.  Yes, this is right after fall break, but I am giving you a full day of review work before break so you should come back ready to rock this.  You should know the following:

• Atomic theory history (there will be an essay question on this)
• Classification of matter (mixtures, substances, etc.)
• Conservation of mass
• Physical and chemical change
• Structure of the atom
• Isotopes
• Ions
  
• Products vs Reactants
• Average atomic mass
• Percent Composition
• Nomenclature (you can use your pink sheet on this test)
  

Quiz on subatomic particles and atomic theory on Friday.

Starting right now, students will have a WebAssign assignment that opens every Monday morning and is due Sunday at midnight.  Instructions for WebAssign were given out in class and are found under Study Help.  Students have internet access at the school in the morning, at lunch, and after school.  If a student needs to print their assignment and turn it in on paper due to limited internet access, that is acceptable.  Contact Carr with any questions.

This week we'll be watching some video clips as we study the development of the atomic theory.  I'm posting these videos under Class Materials so you can watch them if you are absent, miss something, want to study for a test, and of course, if you just want to jam out to the totally awesome music.  Don't worry about videos 5 and 6 unless you are really having a good timeHave fun!

You have a test coming Friday 9/9.  The test will cover the following topics:

• Scientific method including independent and dependent variables and how to graph them
• Measurement including units, tools, and metric conversions
• Scientific notation
• Significant figures (watch the Brightstorm video on this if you are still lost- see the study help section)
• Accuracy, precision, qualitative, and quantitative
• Dimensional analysis (unit conversions)- be ready for this- there will be some tricky ones.  You will be able to use your conversion factors handout.
  

If you'd like practice using scientific notation, here's a good website- you can do a lesson, practice problems, or play a game to learn to use scientific notation.  Scroll down the page to get to the section on scientific notation.

Scientific Notation Help Site

Welcome to chemistry!  Chemistry is the study of matter and its changes but some days it will feel like a math class.  Please bring a calculator to class every day.  Your calculator does not need to be a graphing calculator, but it does need to be a scientific calculator.  This means it has an EE or EXP button. 

Walmart, Target, etc. carry them for around 12 dollars.  If you don't have one, try to get one on sale during the back to school sales.  They will be marked as "scientific" calculators.  Try not to get the ones that say they are for statistics.  Stats calculators will just get you confused.  I like the TI-30xa.  You can also rent a graphing calculator for the year from the media center- a good option if you need one for your math class.  (Most of you in algebra II or above will need a graphing calculator)