) ) ) Chromatography ) ) )
Most commercial colours are mixtures of two or more dyes. In this experiment,
we will use paper chromatography to separate colours into their individual
Various chromatographs have been prepared - some using food
Lecture 3-Chemical Language
-symbols for chemicals are like a chemical language
-structural formulas show connections between atoms
-chemical equations show what happens in a chemical reaction
-physical changes are different from chemical reactions
Lecture 2-The Chemical View of Matter
-everything is matter except energy
simplest kind of matter
most materials, on the molecular level, are very complex
-pure substance-uniform composition and properties
-element-pure substance, one kind of ato
Lecture 4-Atomic Notation
-number of protons=atomic number; determines identity of element
-atomic mass=neutrons + protons
-atomic weights on the periodic table are averages based on all the isotopes of an
element>based on weighted average
Polar and Nonpolar Molecules
-carbon dioxide, CO2m, is a nonpolar molecule even though it contains polar bonds (due to
electronegativity differences between carbon and oxygen
-water, HO, is a polar molecule
-both bonds between oxygen and hydrogen are pola
-fat soluble vitamin
-can be produced in the body through UV light shining on skin>converted through use of bodily
-essential for body to use calcium properly>usually added to milk; lack of vitamin D can lead to
rickets (poor b
Disinfection of Drinking Water
-3 distinct ways of disinfecting water
Chlorine introduced into water as Cl2(g)
Kills bacteria in the water
Significant drawbacks; taste and odour
Possibility of producing trihalomethanes (one hydrogen, 3 haloge
-are molecules which contain both a carboxylic acid and an amine group
-they also contain a side chain denoted by R
-have two reactive parts>carboxylic acid or amine group
-remember general form of amino acid
-amino acids are the building bloc
Chapter 4-The Air We Breathe
-atmosphere is really a few vertical miles of chemicals, mainly gases
-atmospheric pressure: pressure exerted by the weight of the atmosphere>decreases as
-air is less dense at higher altitudes, although com
Matter: Physical Properties
-those traits that can be observed without changing the identity of a substance
-a property that can be observed only in chemical reactions which change the identity of one or more of the
-over the counter drugs can be bought anywhere e.g. drug stores, supermarkets, etc.
-prescription drugs need instructions for use from a physician
-trade name is a manufacturers name for a drug
-an infectious disease is one
How to Write a Proper Lab Report
Title Page Should be neat and simple, this does not contain pictures. (see proper format given in the Appendix
Section of this document)
Title - The title should indicate exactly what you have studied.
It should contain wh
1. Create a chart with the following headings and fill it in with representative molecules for each
family. The first one has been done for you.
Name of Example
What In the World Isnt Chemistry?
-text has website; course has access code
-tutorial meant to answer questions
What is Chemistry?
-the study of matter and the changes it undergoes, matter being anything that has mass and
-all matter is mad
Unique Properties of Water
-water is a polar molecule which participates in hydrogen bonding
-something unique about water is that it expands when it freezes>most substances would
-interesting properties of water all come back to strong intermol
Assignment to take the form of a 1000 word (approx) article that relates to a
topic we have studied or will study.
Take a topic that we studied that was of interest to you and write an article about
Professor Kay Calvin
31 March 2010
Acne Prevention and Clear Skin Solutions
If you are a teenager, waking up one morning to a gigantic zit on your forehead is
probably a common yet undesired occurrence. Acne vulgaris is
The Language and Laws of Chemistry
So what is chemistry, exactly? My favorite answer to that is What in
the world isn t chemistry?
Chemistry is the study of matter with respect to its composition,
characteristics and the
ATOMS and MOLECULES; ELEMENTS and COMPOUNDS
The Building Blocks of Everything
Recall that atoms are the smallest entities that we deal with; they are
the building blocks of all other matter.
We will consider the atom to be a spherical species, with a nucl
ENERGY AND THE ATMOSPHERE
Many of the substances and processes we use to give us energy have an
effect on the atmosphere.
The state of the atmosphere is under constant scrutiny nowadays, with
pollution and global warming taking center stage.
This unit wil
While strictly speaking, a soft drink is anything that does not contain
alcohol, today the term has come to refer to those sweet carbonated
beverages sometimes called pop .
There is no nutrient value in these
The Things we use Everyday
Yet More Organic Chemistry
Before we discuss the chemical makeup of some of the things we use everyday, we are
going to have a brief look at the plastic containers that most of this stuff comes in.
You might think that these pla
Drugs and Toxicity
This section will look at some of the major classes of drugs; their structures and
Many of these drugs are organic compounds which contain nitrogen.
Recall that the first class of compounds containing nitrogen that we studied
An Introduction to Forensic Science
Forensic science is a term which refers to the application of science to answer
questions of interest to the legal system.
While this is generally thought of as being in relation to a crime, it can also apply to a
Carbon Dioxide: A Pollutant?
Not in the same category as SOx, NOx, and O3
Inhaled air is about 0.04% CO2>we exhale substantially more
Plants convert CO2 for their own purposes through photosynthesis>input and output of
carbon is all part of carbon cycle
Polymers of Ethylene Derivatives
-polymers are large molecules that have a simple composition of repeating patterns of starting
unit known as monomer
-natural rubber is elastic; gutta-percha rubber is brittle
Properties of Rubber
Elatomers are substances
The Ozone Layer
Is the sun getting stronger?-No, the ozone layer is simply getting thinner
Types of Radiation and Intensity:
-the shorter the wavelength of the radiation, the higher the intensity of the radiation>the longer
the wavelength of light, the lo
Unit I Organic Chemistry
1. The compounds water, ammonia, and methane are formed when an oxygen atom, a nitrogen atom, and a carbon atom each
bonds with hydrogen atoms.
(a) Write a formula for each of the three compounds.
(b) Predict, with ref