I plan to skip science class this Thursday and just have a long art class.  Please come to art prepared with photos and ideas.  Just this once, we will start class at 9:30.

This science homework is to be completed by Monday; DO NOT put it off to the weekend, please.

Finishing parts I and II from the lab... Synthesis and Decomposition experiments (1-7)
In your science journals, go back to each experiment, including the ones we did NOT do, and figure out the balanced equations for each synthesis and decomposition  reaction.  I will write the answers on the board on Thursday so you can check.

Don't lose your experiment sheets, we will do the rest of the labs next Monday/some of them, anyway.

TAKE NOTES ON VIDEO!!!

This is some extra information you might need for doing Worksheet 4.

Single Displacement Reactions:   A +  BC ->  B + AC
These reactions only happen if   metal A is more reactive than metal B.
You can tell which metal (A or B) is more reactive by either doing the experiment, or looking it up on a list called a "reactivity series".
The metals at the top are more reactive than the ones below.

For instance,  zinc will replace iron but not magnesium, because zinc is higher on the list than iron, but lower than magnesium.  Top guy wins.

• 3Zn +FeCl3  >>  Fe +3 ZnCl    this works, the zinc replaces the iron in the iron(III)chloride solution, and the iron becomes a solid metal
•  but this will not happen:  Zn + MgCl2  >NOT>  Mg + ZnCl  The zinc metal stays zinc metal.  No reaction takes place.

Understanding this is not that important at this point, but I know some of you like to be precise just so you know that some reactions are likely to happen, and some are not.

Do these worksheets:
http://www.sciencegeek.net/Chemistry/chempdfs/EquationsWorksheet4.pdf


and http://www.sciencegeek.net/Chemistry/chempdfs/EquationsWorksheet5.pdf
[some of these reactions  also won't really happen, as you will see from the answer sheet;
don't worry about trying to predict this with the solubility table, just do the switcharoo >>

AB + CD ->  AD +  CB   and make sure your compounds are metalfirst,thennonmetal.
........................................
Hope you are enjoying the labwork, and putting it together with the worksheets, and starting to "get it."

I appreciate your feedback;  we are in the home stretch of chemistry; keep up the good work,

For more pictures of St. Basil's Cathedral, use Google image or go here:
My own google search of St. Basil's
Feel free to use any of these pictures for inspiration,
or find your own landmark.  I suggest you print out about 3 different views to assist you,
and to doodle around with it through the week.


...and back to science, good job today doing the Synthesis of copper(II)oxide.
Monday we will do more experiments, probably on Decomposition reactions.

1. Answer the questions on the experiment page from class (in your SJ) be thorough.
2.Video - take notes in your SJ

 

3. Worksheet: Decomposition Reactions print page 1 only and check your answers from page 2

Types of Chemical Reactions

Today's class did not go so well...I think we will move on...

to>>>CHEMICAL REACTIONS!!! ---the Big Five

1. synthesis (aka composition)  -- putting together
2. decomposition  -- taking apart
3. single displacement  -- a switcharoo
4. double displacement --a double -switcharoo
5. combustion  -- and kapow!

An overview in videos: yes, take notes!

This information is also in your textbook, for reference, on pages 746-749, which you should read and answer the questions in the math skills activity and in the assessment.

and here is a worksheet:

/Chemistry/chempdfs/EquationsWorksheet2.pdf

answers are on the second page

On Thursday, we will do a lab involving a synthesis reaction between copper and oxygen.  Please be on time.

And here are some interesting videos on HCl...hydrochloric acid,,,

which you will remember we mixed with zinc in class, producing hydrogen gas...

DON'T FORGET  TO COME PREPARED FOR ART ON THURSDAY

SEE LAST WEEK'S BLOG

Art AND Science Homework

Art Students: Prepare for the Big One! So far we have done small watercolor projects, in preparation...now a major assignment begins, combining what you are exploring in your geography class and your artistic genius.  An 11x15 watercolor, and it can  be...

• a famous landmark/building  from a country you've studied, or are interested in, like the Hagia Sophia, or the Taj Mahal or ...anything except the USA
• an artistically done map which reflects the culture of the area as well as the geography
• or your idea, so long as it reflects a geographical theme, and it gets my approval 

TO PREPARE>>> Collect several pictures (Google image search) and study up on what you are proposing to create.  Bring to Thursday's class for approval.  This project will require you to do some work at home and come to class prepared.

     

AND NOW FOR SCIENCE>>>>>>>>>>>>>>>>>>>>>>>>

This worksheet:  http://misterguch.brinkster.net/PRA001.pdf

and also this worksheet >>>https://drive.google.com/file/d/0B07s3-bcUr7teWQ2UjVIckI0bFU/view?usp=sharing

Turn in all  worksheets on Monday

Ketchup...I mean, Catch Up

If you have not done the homework from last blog, please scroll down to find last week's blog and put in the extra time. Three worksheets and two videos....this is catching up, and you have till next Monday.  You also have the review worksheet from class to complete.

****But to be clear, for this Thursday, you MUST watch the following videos, and please take notes.
 ***** Thursday's lab will be on counting atoms.

*****Don't forget to finish up the worksheet from class.

Avogadro's number. 

Over the Break...

No class next week, but there is homework for Monday when we return.

PRINT OUT THESE THREE WORKSHEETS

answers are included, but save ink and only print the first page of each file.

• Mixed ionic and covalent naming worksheet
• Word equations worksheet (just write the balanced equation; you can ignore the "H=negative" stuff )  if you can figure out if it is dissolved in water (aq), solid (s), liquid (l) or gas (g) write that as a subscript by the compound.  If heat is a product, write it on the product side as "+heat"
• More balancing equations worksheet

And here is an excellent video, please watch the first 14 minutes at least, but you may certainly finish it off, to get ahead.  Quantifying Chemical Reactions  not a catchy name, but really well done and interesting. total time 28 minutes.

LOOKING AHEAD; When we come back from winter break, we will dig into the subject of chemical reactions-- lotsa labs, lotsa fun.  We will once again do individual demonstrations of chemical reactions and the internet is a great source to find interesting demonstrations using household products.  So keep your eyes open for an experiment you might want to demonstrate to the class.

Like Sudoku, but different...

I.   pHET simulation : Balancing Chemical Equations - Play the Game! do the introduction, use the tools (in the upper right corner) play the game (3 levels)  -- I can't tell if it is easier to start with the sim or with the video... if the sim is frustrating, come back to it after the lesson.

...and on to the [skip,skip,skip] the next chapter, Chapter 24, Chemical Reactions!

Read section 1, Chemical Changes, page 738-742
Take notes in your SJ, including vocabulary, reading check questions,  copy Table 1 and Figure 4  and answer the section 1 assessment questions 1-7.

II. Balancing Chemical Equations

Now do the Balancing equations worksheet from class:
for help with harder equations, watch more:

And worksheet/answers are here:http://misterguch.brinkster.net/WKS001_019_348432.pdf

not to belabor...