Atomic structure student version

19
Edufest 2013 CHEMISTRY – AN ESSENTIAL SCIENCE

description

Atomic structure by Mr Law Hock Ling

Transcript of Atomic structure student version

Page 1: Atomic structure student version

Edufest 2013

CHEMISTRY – AN ESSENTIAL SCIENCE

Page 2: Atomic structure student version

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

Page 3: Atomic structure student version

Atomic Structure

Page 4: Atomic structure student version

It Boils Down To Atoms!

Page 5: Atomic structure student version

Subatomic Particles

care

Page 6: Atomic structure student version

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

Page 7: Atomic structure student version

Bohr Model of an Atom

Page 8: Atomic structure student version

Electron arrangement in an Atom

Page 9: Atomic structure student version
Page 10: Atomic structure student version

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

Page 11: Atomic structure student version

Electronic Structure of a Magnesium atom

Page 12: Atomic structure student version
Page 13: Atomic structure student version

Representing the Proton and Mass Numbers

Neutral Atom : No of protons = No of electrons

Page 14: Atomic structure student version

Skills Practice 1

Page 15: Atomic structure student version

Drawing Electronic Structures

Could you spot some patterns?

Page 16: Atomic structure student version

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.

Page 17: Atomic structure student version

Skills Practice 2

Page 18: Atomic structure student version

T/F

Page 19: Atomic structure student version

Skills Practice 3