Thursday 10 October 2024

types of reactions

 TEACHING NOTES: First lets review the main types of reactions: 

notes on types of reactions

Study Guide  and answer key below

 answer key to your chapter 6 worksheet

TEACHING NOTES: First lets review the main types of reactions: 

notes on types of reactions

Study Guide  and answer key below

 answer key to your chapter 6 worksheet

LESSON: Chemical reactions may be categorized as follows : 

1.     Synthesis
2.     Decomposition
3.     Single replacement
4.     Double replacement

5.     Combustion
       Cellular Respiration
6.     Oxidation of metals



Synthesis reaction:
element     +   element    -->    compound




Decomposition reaction:
Compound    -->   element     +     element
Or

Compound --> smaller compound    +   element




DOUBLE REPLACEMENT


single replacement
IN ADDITION TO THE FOUR TYPES ABOVE, THERE ARE ALSO THREE MORE KINDS of reaction TO KNOW: 

Combustion:  combustion may happen to any *organic compound* meaning any compound made of carbon, hydrogen and/or oxygen...
Carbon based compound+ oxygen --> carbon dioxide + water
+ heat and light energy












Cell respiration looks like combustion,
BUT IT IS NOT. YOUR CELLS ARE NOT COMBUSTING.  The carbon based compound in this case is glucose, a simple sugar.

Glucose +   oxygen -->  carbon dioxide + water + energy for cell


Oxidation reaction

Metal +  oxygen   -->   metal oxide

ACID BASE REACTIONS ARE ALL NEUTRALIZATION REACTIONS






In summary....




 

Monday 7 October 2024

Liver Anyone?

 


In the human body, ENZYMES help speed up chemical reactions. 

Today we take a piece of raw pork liver and add it to Hydrogen Peroxide.  Raw liver contains an enzyme called "catalase" which has a job of breaking the bonds in hydrogen peroxide.  When those bonds are broken, atoms rearrange themselves and new products are formed.  

In today's lab, we discover the new products

Monday 23 September 2024

Ionic and Covalent bonding, Nomenclature

  

 


Assignment:

 Nomenclature practice sheet. Do these practice sheets for 10 marks homework check

Answer key is here

Table of alkanes from wikipedia 


Monday 16 September 2024

Practice making lego formulae

 practice making lego formulae.  Take a picture of the lego formulae you did in class

We will learn the analogy of LEGO and  practice building lego compounds, and writing lego formulae

Take a picture of the work you did in class


15 marks

Examples:






 

Wednesday 11 September 2024

An introduction to Chemistry: The analogy of the Atom as lego

  

An analogy for Atoms, Compounds and Formula, drawn by SN This video is the first in the series for beginner Chemistry. In this video, I use the analogy of the atom as units very much like "lego bricks". This analogy was first used by researchers in MIT.

Monday 9 September 2024

Science Observation and Measurement Activity

 In this lab you will take the following measurements and you will tell me how you arrived at your answer

1.  Find the volume of our classroom using only metre sticks.  Enter the data on the chart on the side of the class

2. Find the mass of the science chair using only a bathroom scale

3.  observa n interesting object under the dissecting microscope. Measure its size in the field of view.  

4.  Measure the volume of a  REGULAR shape of your choice

5.  Measure the volume of an IRREGULAR shape of your choice.


Show your work and hand this in . There are 5 points per question

/25 points