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Science 3200 Unit 1
Notes 1.1
Chemistry is the study of the composition, properties, and reactions of matter
Matter is
Matter can be grouped based on two types of properties
Physical Properties
&
Chemical Properties
Description
Examples
Chemical reactions happening around us:
1.
4.
2.
5.
3.
Two systems designed to help us use hazardous chemicals safely are:
1. WHMIS
2. HHPS
Three ways WHMIS provides information
1.
2.
3.
Science 3200 Unit 1
Symbol
Notes 1.1
Meaning
Science 3200 Unit 1
Notes 1.1
Chemists try to classify matter based on its ____________ and its _____________
Two types of matter are pure substances and mixtures
Pure substances
Mixtures
Define
Examples
Pure substances
Substance
Atom
Molecule
Element
Compound
Explanation
Example
Science 3200 Unit 1
Notes 1.1
Classifying Mixtures
Explanation
Homogeneous (Solution)
Heterogeneous
Examples
Science 3200 Unit 1
Notes 1.1
Compare physical and chemical changes
Physical change
Description
Examples
Describe 4 pieces of evidence for a chemical change
1.
2.
3.
4.
Describe how you can test for 3 commonly produced gases
Oxygen
Hydrogen
Carbon Dioxide
Chemical Change
Science 3200 Unit 1
Notes 1.1
The periodic table is an arrangement of elements according to atomic number
The periodic table is used to
1.
2.
Define
Atomic number
Period
Group/ family
Metals and non metals are separated by a “staircase”
Metals
Non metals
Physical
Properties
Chemical
Properties
Nobel gases are very unreactive
Write the name, symbol and atomic number for 3 metals
Science 3200 Unit 1
Name
Notes 1.1
Symbol
Atomic Number
Write the name, symbol and atomic number for 3 non- metals
Name
Symbol
Atomic Number
Write the name, symbol and atomic number for 3 noble gases
Name
Symbol
Atomic Number
Science 3200 Unit 1
Notes 1.1
Atoms contain 3 types of subatomic particles
Subatomic Particle
Symbol
Charge
Mass
Location
Determining the number of subatomic particles
Subatomic Particle
How to find the number
Equals to the atomic number
Example Ca
20
Equal to the number of protons
because the charges balance
Equal to the atomic mass minus
the atomic number
Atomic Structure
•
Protons and neutrons are inside the nucleus (centre)
•
The electrons are arranged outside of the nucleus in levels
•
Each energy level can only hold a certain number of electrons
1st-2
2nd- 8
3rd-8
How to Draw Bohr Diagrams
1) Draw a small circle- put the symbol in the centre
2) write a small p and the number of protons below the symbol
write a small n and the number of neutrons below this
3) Draw a circle around the nucleus
4) Add dots to represent electrons – start from inside to outside
5) Continue until you’ve draw the correct number of electrons

Draw Bohr diagrams for the first 20 elements
40 – 20 =