The Periodic Table.

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Presentation transcript:

The Periodic Table

ELEMENTS 1 There are more than 100 elements in the world. The Periodic Table charts these elements.

Each element is represented by a symbol ELEMENTS 2 Each element is represented by a symbol

Solids / liquids / gases CLASSIFICATION Elements can be thought of in a number of different ways: Solids / liquids / gases Metals / non-metals Natural / Synthetic Chemical properties

SOLIDS / LIQUIDS / GASES

METALS / NON-METALS metals non-metals

NATURAL / SYNTHETIC About 90 elements are found naturally on Earth Elements 43, 61, 87 and those beyond 92 are man-made

CHEMICAL PROPERTIES 1 2 3 4 5 6 7 Elements organised into families according to chemical properties

GROUPS 1 2 3 4 5 6 7 Transition Metals Halogens Alkali Metals Transition Metals Halogens Alkali Metals Alkaline Earth Metals Noble Gases

PERIODS A PERIOD shows a graduation in chemical properties

True or False False False False True False True False True False False 1. Calcium is a non-metallic element. 2. The chemical symbol for calcium is C. 3. Beryllium is in the same period as calcium. 4. Group 7 in the periodic table is known as the Halogens. 5. Group 0 in the periodic table is known as the Alkali Metals. 6. Chlorine is in the same group as iodine. 7. Nitrogen is in the same group as oxygen. 8. Sodium has similar chemical properties to lithium. 9. Iodine is a liquid at room temperature. 10. Iron is an Alkali Metal. 11. The melting-point of silicon is 1410 C. 12. Phosphorus is a liquid at 100 C. 13. Bromine is a solid at –10 C. 14. The melting point of the Alkaline Earth Metals decreases down the group. 15. Plutonium is a naturally occurring element. False False True False True False True False False True False True True False