Teacher Instructions for labs done with Grade 11 students:

Lab 3 Reaction types:

Printable Student handout  extra reaction types

Set Up:

Station 1: Pre-fill test tubes of Na₂SO₄ and BaCl₂  
Students take one of each in a test tube rack. Pour them together.  
White precipitate = Ba SO₄  

Station 2: Prefill HCl (1.5M) in test tubes. Place a bowl of Magnesium pellets next to it.  
Students take a test tube of HCl (1.5 M) and a few pellets and put the pellets in the acid.
It bubbles up Hydrogen gas.  
Place your finger over the top of the test tube and ignite the gas with a lighter.  

Station 3: Prefill in test tubes. Place a bowl of Iron nails next to it.  
Students take a test tube of CuSO₄ and a nail and put the nail in the acid.  
It turns brown and the CuSO₄ solution losses some of it’s blue green color.  

4, 5 and 6 can be demonstrated.

Lab 4 Percentage of Water in a Hydrate: 

Printable Student handout  Follow directions on handout.

Lab 5 Concentration of Acids:  

Printable Student handout

Grade 12 lab Titration using burets and phenolphthalein indicator.  

Lab 6A Measuring the Mass of a product: 

Printable Student handout

Set Up:  
Plastic cups (A) , a dozen 200 ml beakers of 1.5M HCl acid.  
Bowl of NaHCO₃. Next to scales. Follow directions on hand out.  

Lab 6B Measuring the mass of a reactant in excess:

Printable Student handout

Set Up:  
Flat bottomed empty clean test tubes, 200 ml beakers of 4.0M HCl acid.  
Bowl of Zinc chips. Next to scales.  
Weigh test tube  
Weigh test tube and zinc  
Weigh test tube and zinc and HCl acid.  
(Just enough acid to cover zinc chips.)

Sources of Error: 
Zinc may have not completely reacted. 
Zinc was wet when you weighed it. 
ETC.

Follow directions on hand out.

Lab 7 Line spectra:

Printable Student handout

Teacher Demonstrations.
Observations done by students.

Answer to question:
In the gas phase, the molecules are so far apart that they behave independently and since these electron jumps or energy levels are well defined the spectrum exhibits sharp lines.
In a liquid or solid state, the molecules are close together and so in addition to the individual energy levels, there exists energy levels for the collective excitation of groups of molecules so a continuous spectrum is observed.

Notes on space study and spectroscopy. 

Equilibrium and Keq     Test 5 Review Outline

There are two parts to the test written on different days.

Part A involves 5 Equilibrium (Math)  questions from the Text book P 499 Q#6 and  7 and the Handout: Le Chatelier’s principle and Equilibrium and Keq ( Q 1 to 8, 11 and 12).

Part B involves 40 Multiple choice questions from:

·      Chapter  12: Rates of chemical reactions Multiple choice questions

·       Le Chatelier’s principle Q 1 a to d and 2 a to d.

·      Chemical Equilibrium – Theory review Q 1 to 12.

Part B also has 3 drawing potential energy diagrams similar to P 476 Q 1, 2 and 3.
And Chemical Equilibrium – Theory review Diagrams from Q  9 and 10.