The Periodic Table contains all the known ____. An element is a substance that only contains one type of ____. Each element is represented using a unique chemical ____. It can be split into metals, which are to the ____ of the staircase and non-metals, which are on the ____ of the staircase. There are far ____ non-metal elements than there are metals. The horizontal rows are called ____ and the vertical columns are called ____. Elements that are in the same group have similar ____ properties as they have the same number of ____ electrons. The number of outer electrons is equal to the ____ number where an element is found e.g. the elements in group 1, known as the ____ ____, have ____ outer electron. Group 7, known as the ____ , have ____ outer electrons. Both the Alkali Metals and the Halogens are very ____. Group 8 (sometimes known as group 0) are the ____ Gases and they are very ____ as they have a full, outer electron ____.

The Periodic Table

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