The Periodic TableThe atoms are arranged in the periodic table according to their; Atomic number (the number of protons)Properties (the way they react)The atoms also increase in mass, though there is one exception (Argon and Potassium)

The Periodic Table

The Periodic TablePeriodic Table

Metals and Non-metalsOver 75% of elements are metals. Metals are good conductors of heat and electricity. They have high melting and boiling points and are strong.Less than 25% of elements are non-metals. Non-metals are poor conductors of heat and electricity. They have low melting and boiling points and are brittle when solid

Metals and Non-metals

Metals and Non-metalsMetals and Non-metals

Group 1Group 1 elements are called alkali metalsThey all react quickly with water releasing hydrogen and forming hydroxides (which are alkaline)As you go down Group 1 the elements;become more reactive (the electrons are more easily lost)have lower melting and boiling pointsGroup 1 - The Alkali Metals

Group 1Group 1 The Alkali Metals

Group 7Group 7 elements are called halogens.They;have coloured vapoursare diatomic moleculesform ionic compounds with metalsreact with other non-metalsAs you go down the group the elements;become less reactive (the less easily electrons are gained)have higher melting and boiling pointsGroup 7 The Halogens

Group 7Group 7 The Halogens

Aluminium and ChlorineAluminium and Chlorine

Making Hydrochloric acidMaking Hydrochloric Acid

Displacement reactionsDisplacement reactions

Silver nitrate and halogensSilver nitrate and halogens

Group 0Group 0 elements are called noble gases. They;are very unreactive (they have a full outer shell of electrons)exist as individual atomsArgon is used in filament lampsNeon is used in electrical discharge tubesHelium is lighter than air and used in balloonsGroup 0 Noble Gases

Group 0Group 0 Noble Gases

Transition MetalsTransition metals are typical metals. have high melting pointsare hard, tough and strongreact slowly with oxygen and water (or not at all)Iron is used for building, copper is used for electrical cablesTransition metals form coloured compounds (e.g. pottery glazes)Some are used as catalystsTransition Metals

Transition MetalsTransition Metals

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