Atomic structure student version

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Information about Atomic structure student version
Education

Published on February 27, 2014

Author: marksandstars

Source: slideshare.net

Description

Atomic structure by Mr Law Hock Ling

Edufest 2013

Sec 3 Chemistry Timeline 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

Atomic Structure

It Boils Down To Atoms!

Subatomic Particles care

The Model of an Atom •One negative charge (1-) •Negligible mass (1/1836) •No electric charge •Relative mass of 1 •One positive charge (1+) •Relative mass of 1

Bohr Model of an Atom

Electron arrangement in an Atom

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

Electronic Structure of a Magnesium atom

Representing the Proton and Mass Numbers Neutral Atom : No of protons = No of electrons

Skills Practice 1

Drawing Electronic Structures Could you spot some patterns?

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.

Skills Practice 2

T/F

Skills Practice 3

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