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Unit 8 - Chemical Reactions

 

What you need to know

  • The format and symbols used to express chemical reactions in equations
  • The driving forces for chemical reactions
  • How to balance equations and how the law of conservation of mass indicates balancing is necessary
  • how to recognize types of chemical reactions
  • how to predict products for chemical reactions (omitting decomposition reactions)
  • how to use the activity series in single displacement redox reactions

Text Assignments

Chapter 10 Sections 1,2,3

 

 

 

The schedule during the week of the Arts Blitz may vary by class period - More information to follow as a scehdule is made available

Monday Tuesday Wednesday Thursday Friday

February 9

Chemical Reactions Basics

HW: READ Chapter 10, section 1 and write skeleton equations from worksheet

MIDTERM

10

Driving forces and evidence of chemical reactions, balancing equations

HW: balance skeleton equations from yesterday's worksheet

 
11

Distillation Lab Due

Balancing Reactions

HW: READ chapter 10 sections 2&3. Balancing practice worksheet and

 

12

Reaction Types

HW: Complete remaining balancing reactions worksheets and complete reading assignment. Types of rxn worksheet.


13

Reaction Types and Predicting Products

 

HW: Read and prepare for lab

 

16

Presidents Day Holiday

17

Reaction Types and Predicting Products

Prelab

HW: Write out the reactants and identify the reaction type for each reaction in the lab. This must be completed prior to working in the lab.. Using your chart, predict the products.

 

18

Reaction Type lab

Prepare for post-lab quiz

19

Content Quiz

Continue working on Reactions Lab

20

Types of Reactions lab

Prepare for post lab quiz

Reactions Lab Quiz

23

Activity series lab questions due at end of period

24

Activity Series

25

Review for test

26

Unit 8 Chemical Reactions Test

27

 

 

Practice, Practice, Practice
Please visit this site for a great reading about what chemical equations show and how to balance them. http://www.visionlearning.com/library/module_viewer.php?mid=56
This site is online practice for balancing. Try these! http://www.chem.vt.edu/RVGS/ACT/notes/scripts/bal_eq1.html
Study Guide

What is an equation and what does one show?

What do these symbols indicate in an equation?

->
(g)
+
(aq)
(l)
(s)
(cr)

Why do we balance equations? Need to read more before you decide on an answer? Try this website.

http://www.visionlearning.com/library/module_viewer.php?mid=56

Can you identify the reactants and products of these reactions? (sorry, the subscript and superscript formating may not work on all browsers)

H2O -> H2 + O2
Na + Cl2 -> NaCl
2 H2 + O2 -> 2 H2O
Li + H2O -> LiOH + H2

Which of the reactions above are balanced?

Need help with the process of balancing? Try these websites!

http://www.wfu.edu/~ylwong/balanceeq/balanceq.html

http://dbhs.wvusd.k12.ca.us/Equations/Balance-Equation.html

Want some practice? Try this websites!

http://www.psigate.ac.uk/newsite/reference/chemlecs/rxnbalancing.html

What do we call an unbalanced chemical equation?

Write the equation for the reactions described below? And balance?

1. magnesium metal burns in oxygen to produce magnesium oxide ash.

2. cobalt reacts with fluorine gas to produce cobalt (II) fluouride

3. a solution of potassium iodide when added to a solution of lead(II) nitrate produces a yellow precipitant lead (II) iodide and aqueous potassium nitrate.

4. carbon dioxide and calcium oxide are produced from calcium carbonate

5. aluminum reacts in a solution of iron(II) nitrate to form iron metal and aluminum nitrate

Don't forget about HOFBRINC! http://dbhs.wvusd.k12.ca.us/Equations/DiatomicList.htm

Next, identify the types of reactions those above can be classified by.

1.

2.

3.

4.

5.

 

Need some more reading first? Try this website! http://dbhs.wvusd.k12.ca.us/webdocs/Equations/Equations.html
Reaction Type Lab - Questions
You will perform several reactions of each type we have discussed. You will have to determine type, predict produces and balance. Base your choices on oberved evidence, the patterns of each type of reaction and the results you observe of each. You will also use some bench tests on the products to help you determine what was produced in some reactions. This lab requires some thought and reasoning! Focus on supporting your reasoning using your evidence from lab observations. Work on making connections clear and specific.
Activity Series Lab - Lab Report

In order to complete the conclusion of your lab report, you need to do some reading and thinking. If you need to go beyond your text book and class notes, try this website about single displacement reactions and the activity series of metals.

http://www.chem.vt.edu/RVGS/ACT/notes/activity_series.html

 

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