1.2.7

Metals & Non-Metals

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Metals and Non-metals

The elements in the periodic table can be roughly divided into metals and non-metals. There are more metals than non-metals in the periodic table. In the periodic table below, metals are red and non-metals are green.

Metals

Metals

  • Metals are found on the left of the periodic table because they have few electrons in their outer shell.
  • When metals react, they lose 1 or more of these negatively charged electrons to form positively charged ions.
Properties of metals

Properties of metals

  • Metals have high melting and boiling points.
  • Metals are good conductors of heat and electricity.
  • Metals are all solids (except for mercury) at room temperature.
Non-metals

Non-metals

  • Non-metals are found on the right of the periodic table because they have many electrons in their outer shell.
  • When non-metals react, they either:
    • Gain electrons to form negatively charged ions.
    • Or share electrons to form neutral molecules.
Properties of non-metals

Properties of non-metals

  • Non-metals have lower melting and boiling points than metals.
  • Non-metals are often found as gases.
  • Non-metals generally do NOT conduct heat or electricity.
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1

Principles of Science I

1.1

Structure & Bonding

1.2

Properties of Substances

1.3

Cell Structure & Function

1.4

Cell Specialisation

1.5

Tissue Structure & Function

1.6

Working with Waves

1.7

Waves in Communication

2

Practical Scientific Procedures and Techniques

3

Science Investigation Skills

4

Principles of Science II

4.1

Extracting Elements

4.2

Relating Properties to use of Substances

4.3

Organic Chemistry

4.4

Energy Changes in Industry

4.5

The Circulatory System

4.6

Ventilation & Gas Exchange

4.7

Urinary System

4.8

Cell Transport

4.9

Thermal Physics

4.10

Materials

4.11

Fluids

5

Contemporary Issues in Science

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