Oct.3

My Task Tracker

As of today, the following tasks should be completed, submitted and checked off on your task tracker (unless you have negotiated an extension):

Science/Health/Math:

Bring to class 1 nutritional facts label (or a picture of it) from any food product you enjoy eating on a regular basis so we can calculate our daily, weekly, monthly sugar consumption of those products.  We will use our knowledge of math rates 1 teaspoon sugar = 4 grams of sugar and compare it against the recommended daily intake limit (women 6 tsp/day, men 9 tsp/day).

http://www.cbc.ca/fifth/episodes/2012-2013/the-secrets-of-sugar



Pure Substances & Mixtures

 


Examples of pure substances that contain only 1 kind of particle include:
-distilled water
-copper
-tin, aluminum foil
-pure sugar (sucrose)
-diamond
-table salt (sodium chloride)
-baking soda (sodium bicarbonate)
-pure olive oil
-pure maple syrup
-pure unpastuerized honey
-sulfur 
-cocoa, coffee

Examples of mixtures that contain 2 or more pure substances include:
-gasoline (engine cleaning detergents)
-smog
-dairy products
-wine (grape blends)
-alloy (combination of different metals)
-juices blends
-blended/refined cooking oils
-water: hydrogen & oxygen
-carbonated water: spring water w/carbon dioxide
-air: nitrogen & oxygen (emissions, pollution etc)
-minerals

Batteries, paints, wood stains, drain cleaner, car antifreeze, pesticides, fertilizers, motor oil, bleach, cannot be disposed in the regular garbage because they contain a combination of toxic pure substances.  Our city conducts a separate collection of "hazardous waste" products.




Pure substances are completely natural containing only 1 specific particle, whereas, mixtures are a combination of 2+ of those pure substances.

cookies: mixture
sugar: pure
aluminum foil: pure
steel: mixture of iron & carbon
apple juice: mixture (water, sugar, pasteurization)
tap water: mixture (contaminants, bacteria, flouride, chorline, minerals etc.)
lead: pure element on periodic table
air: mixture
mercury: pure
sweetened water: mixture

Orange Juice is a mixture, not a pure substance because chemists have added artificial fragrances and flavours to mimic the smell and taste of freshly squeezed natural juice.  They have balanced acidity and sugar levels.  They have now also added calcium and vitamins to it.  Read Toronto Star article by clicking link: 
http://www.thestar.com/life/health_wellness/nutrition/2009/05/20/whats_wrong_with_orange_juice.html

Lab 3 Pure Substances vs Mixtures

Purpose:  
To test ink in a black marker to determine if it's a pure substance.

Hypothesis:  
If I use a black marker to draw a line on a strip of filter paper and let it stand in a glass of water just up to the drawn line for a few minutes, then I think...because...

Procedure:
Text pg.21 1-4

Observations:
Question A answered using:  table, pictures, or video.

Analysis:
Question B.

You will conduct this experiment with a partner on Monday.


Novel Study: Hatchet Chp.17-18 Rising Action approaching Climax

Using his "sense" and "patience", Brian problem-solves his way to the sunken plane (by creating a raft and using it as a base) to recover the survival pack stowed in the fuselage.

Brian nearly looses his hatchet which represents him - his hope and determination to survive; without it, he is nothing.  Brian is sickened by the pilot's decomposed skull but is successful in recovering the survival pack.