METALS

PHYSICAL PROPERTIES OF METAL

Luster- how shiny an object is. Usually categorized as shiny or dull.

Another physical property of metals

Another physical property of metals

MALLEABILITY -the ability to be hammered, pressed or bent into shape w/out breaking.

MALLEABILITY -the ability to be hammered, pressed or bent into shape w/out breaking.

Yes, another physical property of metal.

Yes, another physical property of metal.

DUCTILITY - the ability to be pulled or drawn out into a wire.

More Physical Properties of Metal

Magnetism - the ability to attract or repel magnetic materials or become magnetic.

color

Metals can be different colors.

This is another physical property.

THE FINAL PHYSICAL PROPERTY OF METAL

CONDUCTIVITY - the ability to transfer heat or electricity.

CHEMICAL PROPERTIES OF METAL

REACTIVITY- the ease & speed w/ which elements combine or react.

CORROSION- the destruction of a metal when iron is exposed to oxygen.

Groups of METALS

Alkali Metals

Alkaline Earth Metals

Transition Metals

Mixed-Grouped Metals

Lanthanides

Actinides

ALKALI METALS

Group 1 VERY reactive Shiny Soft (you can cut with a knife) Brainiac Alkali Metals Video

ALKALINE EARTH METALS

Group 2 Reactive (not as reactive as group 1) Fairly hard Gray-white Good conductors of electricity

TRANSITION METALS

Groups 3-12 Hard Shiny Good conductors of electricity Form colorful compounds

MIXED GROUP METALS

Metals in groups 13-15 Not very reactive

LANTHANIDES

Soft Malleable Shiny High conductivity Used to make alloys

ACTINIDESACTINIDES

Some are found naturally. Others created artificially. Unstable elements.

REVIEW QUESTIONSREVIEW QUESTIONS

1. Give an example of how ductility can be useful?

2. What property of metals led to the use of plastic or wood handles on many metal cooking utensils?

3. What group contains the most reactive metals?

4. What area of the periodic table would you look to find a metal good for coating another metal to protect it from corrosion?

ANSWERS

1. Copper’s ductility allows copper to be drawn into wires that carry electricity.

2. Metals are good conductors of heat. Plastic or wood handles, which do not conduct heat, protect hands from the heat.

3. Alkali metals, Group 1

4. Groups 13-15