Elements, Compounds and Mixtures

Elements, Metals and Non-Metals

Objectives

Identify elements as the building block of matter

Classify elements as metals and non-metals

State the uses of metals and non-metals

What are they?

Gold Tin

Copper

Carbon

Carbon

Elements

Elements are the basic building block of matter.

There are about 117 known elements as of October 2006.

For online interactive information: www.chemicalelements.com

Metals and Non-Metals

There are two main groups of elements: metals and non-metals

Metals Non-Metals

Shiny Dull

High Density Low Density

Solids* Solids/Liquids/Gases

Good conductors Poor Conductors

Periodic Table

The periodic table of elements is a table that shows all the known elements.

It list the elements in order of atomic masses and energy level of electrons.

It tells us metals from non-metals

Uses of Metals and Non-Metal

Chemical Elements are represented by Symbol

O16

8

OxygenAtomic Number

Mass Number

Conclusion

Matter are made up of building blocks called elements.

Elements are divided into two groups: metals and non-metals.

Different properties metals and non-metal allow them to be used in different products.

Periodic Table tells us metals from non-metals as well as their reactivity.