atomic structure student version
DESCRIPTION
Atomic structure by Mr Law Hock LingTRANSCRIPT
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Edufest 2013
CHEMISTRY – AN ESSENTIAL SCIENCE
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Topic Date
Kinetic Particle Theory Jan
Experimental Techniques Jan-Feb
Elements, Compounds and Mixtures
Feb
Atomic Structure Feb-Mar
Chemical Bonding Mar-Apr
Chemical Equations Apr
Acids, Bases and Salts Apr-May
Chemical Calculations Jun-Jul
The Atmosphere and Environment
Jul-Aug
Revision Sep-Oct
Sec 3 Chemistry Timeline
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Atomic Structure
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It Boils Down To Atoms!
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Subatomic Particles
care
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The Model of an Atom•One negative charge (1-)•Negligible mass (1/1836)
•One positive charge (1+)•Relative mass of 1
•No electric charge•Relative mass of 1
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Bohr Model of an Atom
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Electron arrangement in an Atom
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Rules for Drawing Electronic Structures
• An electron occupies the ___________before pairing up with another.
• __________energy shells are occupied first.• First shell, max = ___ electrons• Second shell, max = ___ electrons• Third shell, max = ___ electrons• Fourth shell, max = ___ electrons
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Electronic Structure of a Magnesium atom
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Representing the Proton and Mass Numbers
Neutral Atom : No of protons = No of electrons
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Skills Practice 1
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Drawing Electronic Structures
Could you spot some patterns?
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What is the relationship between these three atoms?
ISOTOPES! ATOMS OF THE SAME ELEMENT WITH THE SAME NUMBER OF PROTONS AND ELECTRONS, BUT DIFFERENT NUMBER OF NEUTRONS.
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Skills Practice 2
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T/F
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Skills Practice 3