Elements and periodic table

• An element is a substance that contains only one type of atom
• Each element is given it's own chemical symbol which starts with a capital letter
• Metals are good conductors of electricity and thermal conductors and are not known for being magnetic
• The only magnetic metals are iron, cobalt and nickel
• Graphite (Carbon) is the only non-metal that conducts electricity
• Metals have high melting points and density
• Metals are malleable and ductile
• Metals are usually solid at room temperature
• Metals are only shiny when polished
• Non-metals are not malleable and ductile because they are brittle
• Metals are hard and strong
• Non-metals have low melting points and low density
• Non-metals are electrical and thermal insulators
• Non-metals are solid liquids and gasses at room temperature
• Non-metals are dull
• Ductile means can be stretched into wires
• Malleable means can be bent or hammered into shape
• The periodic table is arranged with metals on the left hand side and non-metals on the right hand side
• Non-metals are on the right going down like a staircase from Boron
• The periods are across and are labelled with numbers. The first period only has two elements H and He
• The groups on the periodic table are Group 1 - Alkali metals; Group 2; Transition metals; Group 3; Group 4; Group 5; Group 6; Group 7 - Halogens; Group 0 - Noble gasses
• H is Hydrogen
• He is Helium
• Li is Lithium
• Be is Beryllium
• B is Boron
• C is carbon
• N is nitrogen
• O is oxygen
• F is fluorine
• Ne is neon
• Na is sodium
• Mg is magnesium
• Al is aluminium
• Si is silicon
• P is phosphorous
• S is sulfur
• Cl is chlorine
• Ar is argon
• K is potassium