4.5 Fire and brimstoneOctober 18, 2010

Are the following materials metals or non metals?

OsmiumHydrogenChromium

ArgonUranium

Radon

PlasticSalt

Learning outcomesI can:

Before the unit

I have learned this

I have revised this

I can identify elements and compounds from their names. (Level 5)I can explain the difference between elements and compounds using ideas about atoms. (Level 6)

I can talk about how the Periodic Table is arranged in groups and periods. (Level 3)

I can tell if an element is a metal or non-metal by looking at the Periodic Table. (Level 4)

I know some properties and uses of metals and non-metals. (Level 4)

I can identify whether an element is a metal or a non-metal from its properties. (Level 5)

I can use the Periodic table to make predictions about the properties of elements. (Level 7)

I can use information about chemicals to write down a detailed risk assessment. (Level 6)

I can use my observations to explain when a chemical reaction has happened. (Level 6)

I can summarise chemical reactions using word equations. (Level 6)

I can describe how distillation separates mixtures. (Level 5)

I can explain how a mixture is different to a compound or element. (Level 5)

I can talk about why the total mass does not change during an experiment. (Level 6)

I can discuss how chemicals can be used for both peaceful uses and in war. (Level 5)

I can use symbol equations to show what happens during reactions (Level 7)

Learn about:

• What non-metals are like, and what they are used for

• The differences between metals and non-metals

• New materials for special used

Sulfur

• You find sulfur where you find volcanoes• Sulfur is a non-metal• Long ago, it used to be called brimstone• Not many elements are non-metals• Most non-metals are gases, one is a liquid

and the rest are solids• The properties of non-metals are generally

the opposite of metals

To conduct or not conduct

• Energy ball demo

Uses of non-metals

• Although there are fewer non-metals than metals, they have a lot of important uses

Metals or non-metal?

• Jasmine, Becca and Ryan have different ideas about how to decide which of these elements are non-metals and which are metals

• Jasmine suggests putting all the solids in one group as all metals are solid, the others are then non-metals

• Ryan thinks we should put all the conductors in one group as metals conduct heat well. All the others will be non-metals

• Becca disagrees and thinks that those that conduct electricity are metals so the others are non-metals

Question

• For Jasmine, Becca and Ryan, make a list of which elements they have decided are metals and which are non-metals

• Explain who has the best idea (6)

New materials from non-metals• Scientists are able to make new materials

from non-metals• Carbon fibres are made from carbon• Carbon is a weak, brittle substance but

carbon fibres are very strong anf light• The body of the Eurofighter is

strengthened with a large proportion of carbon fibres

• As well as making the aeroplane strong and light, the carbon fibres make its body hard for radar to detect

‘All metals are similar, but non-metals are all different to each other’