Make your own free website on Tripod.com
Physical Science Notes 416-436
Periodic Table of the Elements: Properties of Elements
Home
Science
Tips and Tricks
Matter
Chemical and Physical Changes and properties
Periodic Table of the Elements: Properties of Elements
Atomic Theories and discoveries
Bohr Model
Isotopes
The Naming of Binary Compounds
Octet Rule/Elemental Happiness
Balancing Chemical Equations
Magnetism
Mole
pH
pH Math
Acid Rain
Review Questions
Review tests
Answers
Testing for H2, CO2 and O2 Lab
Conductivity Lab
Colour your world Lab
pH Lab
Isn't it Ionic Lab
Titration Lab 1 and 2
How to write a lab report
Definitions
Tutoring Schedule
Fun Facts
Links
Contact Us

How do you know whats what? Well knowing properties might help

The Periodic Table

Who put together the Periodic Table of the Elements?

-Mendeleeve, a Russian man, organized the periodic table for the first time but the increase of the elements increasing atomic mass.

            The Periodic Table was organized in many ways:

                        -By increasing atomic number from left to right

                        -Into metals, metalloids and nonmetals

                        -Into columns (groups or families) and rows (periods).

 

Metals

            -80% of the total elements on the Periodic table

            -Occur toward the left and bottom of the periodic table

 

Physical Properties:

 

-are shiny (have lustre)

metal.jpg

-are hard

-are malleable (can be hammered into sheets)

malleable.jpg

-are ductile (can be drawn into wires)

-conduct electrical energy

conductselectricity.jpg

-conduct heat energy

conductheat.jpg

-have high melting points

 

Chemical Properties:

 

-react with acids to produce hydrogen gas (H2)

-react with oxygen to produce metallic oxides e.g. MgO

-lose electrons during chemical reactions to become positive ions

 

Nonmetals

 

-occur toward the right top of the periodic table

 

Physical Properties:

 

-are dull in appearance

-are friable (brittle)

-do not conduct electrical or heat energy

noconduction.jpg

-have low melting points

Copyright science_maniac_90