By: Ang Wei Jun Bryan Periodic Table. Aims Introduce the periodic table Introduce the first three elements of the periodic table.

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Presentation transcript:

By: Ang Wei Jun Bryan Periodic Table

Aims Introduce the periodic table Introduce the first three elements of the periodic table

Periodic Table a tabular display of the 118 known chemical elements organized by selected properties of their atomic structures

Periodic Table Organised into Atomic number Number of protons in its nucleus Group Vertical column in periodic table Periods Horizontal row in periodic table

Hydrogen Lightest and most abundant chemical element Over 90 percent of the atoms in the Universe are hydrogen Only element that can exist without neutrons

Helium Boiling and melting points are the lowest among the elements Light, odourless, colourless, inert, monatomic gas Used for filling balloons

Lithium Soft, silver-white metal that belongs to the alkali metal group of chemical elements lightest metal and the least dense solid element Is corrosive, causes skin burns