Metals and Non-Metals

Metals

1. Good conductors of electricity

2. Good conductors of heat

3. Shiny

4. Sonorous

5. Ductile

6. Malleable

7. High melting point

8. Dense

Non-Metals

1. Poor conductors of electricity

2. Poor conductors of heat

3. Dull

4. Brittle

5. Low melting point

Good conductors of heat (Metal)

transfer heat

example: copper for saucepan

Shiny (Metal)

Their surfaces reflects light

example: chromium (Cr)

Magnetic metals (Metal)

Iron

Cobalt

Nickel

Sonorous (Metal)

Rings when struck

example: tin (Sn)

Ductile (Metal)

Can be drawn out into wire

example: copper

Malleable (Metal)

Can be hammered into shape without cracking

example: gold (rings)

Dense (Metal)

cm^3 =mL

...

Particles packed closely in a small volume

Poor conductors of electricity (Non-Metals)

Exception: graphite (made of carbon)

Poor conductors of heat (Non-Metals)

nothing

Dull (Non-Metals)

Not shiny

exception: iodine, diamond

Brittle (Non-Metals)

hard but liable to break easily

example: carbon (in the form of graphite)

Low melting point (Non-Metals)

Exception: diamond (made of carbon)

Metal element that is liquid

Mercury (Hg)

Non-Metal element that is liquid

Bromine (Br)

Which non-metal conducts electricity?

Graphite (made of carbon)

Which non-metal elements are considered to be shiny?

Iodine, diamond

Which non-metal element is very hard?

Carbon

Name 2 gaseous elements present in the air and are made of diatomic molecules.

Oxygen, Nitrogen

Name 3 metal elements and state their uses in everyday life.

Copper - wires

Iron - forks, spoons

Aluminium - aluminium foil, hand cream

Chorine - pool

Element definition

A substance made up of 1 type of atom

It cannot be broken down into anything simpler (not even chemical reaction)

Each atom in the element has the same number of protons

Compound

A compound consists of two or more elements chemically joined together.

Metals and Non-Metals on the Periodic Table

Metals are found on the left-hand side of the periodic table and non-metals on the right-hand side of it.

Diatomic

Br, I, N, Cl, H, O, F

Monoatomic

The Noble gases (group 0)