Friday 26 May 2023

Electromagnetic spectrum

 Today we learned about the electromagnetic spectrum.  Within your group, find the following & take a picture with a sign labeling what you found. Put this together in a power point and hand it in through TEAMS.  YOUR PIC MUST HAVE THE SIGN IN IT!!


Second block  

1.  a radioactive food

2.   Something that makes  a wave slower than infrared wave and which can transmit images and sound

3.   Someone who has had radiation on purpose & the radiation has a faster wavelength than UV

4.   Someone with something that *filters* UV light 

5.  Something that makes waves that are slower than infrared, faster  than radio waves 

6.  Americium 

Wednesday 24 May 2023

Half life

 Watch the  two videos below and take notes on them.  Please do the following worksheets if you can locate them. 

The section 7.1 worksheet is at the back of the class If you can find it, then work on it.    one answer key is here and the other  Answer key  is here.


Thursday 18 May 2023

Red Wine or White Wine

  I invited you to a fancy French restaurant and served you "red wine or white wine"...



Do an experiment with some unknown chemicals.  Write up your experiment in a lab report. Use your knowledge from the Acids and Bases notes to deduce what happened during our little magic trick.  Write up your experiment. 

You will include data from  spot plate labs


Wednesday 17 May 2023

Wednesday 3 May 2023

Types of Reactions Notes

 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


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


A 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....