Following are a variety of resources for the Chemistry Unit. NOTE that there is an ever evolving list of work that has been set for students to complete.
Unit review materials
Simple Ionic Formula .......................................................Basic Unit Review Grade 9 ..............................................Chemical Reactions
Set work ...
Click to download the workbook pages. NOTE - These HAVE been given out in class
Part 1 - Intro chem Part 2 Basic naming Part 3 (4.2) naming Sci 9 Hon ext Bal Chem Eqn
Part 1 - Intro chem Part 2 Basic naming Part 3 (4.2) naming Sci 9 Hon ext Bal Chem Eqn
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Video resources
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Check out this page ... https://socratic.org/chemistry
Chemical Equations ... Hon. extensions
The Four Major Types of Reactions ...
Name General Reaction Pattern
1) Combination or synthesis A + B ➔ AB
2) Decomposition AB ➔ A + B
3) Substitution or Single Replacement A + BC ➔ B + AC
4) Metathesis or Double Replacement/Displacement AB + CD ➔ AD + CB
Then we add on ....
5) Acid Base Neutralization HX + MOH ➔ MX + H2O
Acid (H) + Base (OH) ➔ Salt + Water
6) Combustion CXCY + O2 ➔ CO2 + H2O
hydrocarbon + oxygen ➔ carbon dioxide + water
Name General Reaction Pattern
1) Combination or synthesis A + B ➔ AB
2) Decomposition AB ➔ A + B
3) Substitution or Single Replacement A + BC ➔ B + AC
4) Metathesis or Double Replacement/Displacement AB + CD ➔ AD + CB
Then we add on ....
5) Acid Base Neutralization HX + MOH ➔ MX + H2O
Acid (H) + Base (OH) ➔ Salt + Water
6) Combustion CXCY + O2 ➔ CO2 + H2O
hydrocarbon + oxygen ➔ carbon dioxide + water
Balancing Combustion Reactions
As you have learned, there is not always a straightforward way to balance a reaction. We tend to just go back and forth, balancing elements on the left and the right, until it works. Combustion reactions are easier!
Balance the elements in the following order: carbon, hydrogen then oxygen.
Take pentane:
C5H12 + O2 -> CO2 + H2O
Step 1 balance carbon: you see 5 carbons on the left so you know it will produce 5 CO2.
C5H12 + O2 -> 5 CO2 + H2O
Step 2 balance hydrogen: you see 12 hydrogens on the left so you know it will produce 6 H2O.
C5H12 + O2 -> 5 CO2 + 6 H2O
Step 3 balance oxygen: you see 10+6 or 16 oxygens on the right so you know it will require 8 O2.
C5H12 + 8 O2 -> 5 CO2 + 6 H2O
And it is balanced!
As you have learned, there is not always a straightforward way to balance a reaction. We tend to just go back and forth, balancing elements on the left and the right, until it works. Combustion reactions are easier!
Balance the elements in the following order: carbon, hydrogen then oxygen.
Take pentane:
C5H12 + O2 -> CO2 + H2O
Step 1 balance carbon: you see 5 carbons on the left so you know it will produce 5 CO2.
C5H12 + O2 -> 5 CO2 + H2O
Step 2 balance hydrogen: you see 12 hydrogens on the left so you know it will produce 6 H2O.
C5H12 + O2 -> 5 CO2 + 6 H2O
Step 3 balance oxygen: you see 10+6 or 16 oxygens on the right so you know it will require 8 O2.
C5H12 + 8 O2 -> 5 CO2 + 6 H2O
And it is balanced!
Periodic Table Download
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Lecture materials
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