What are three properties of elements?
Periodic Table: A chart that organizes chemical elements based on their properties. The periodic table is split into metals and non-metals. All metals are solid apart from Mercury (Hg) which is liquid at room temperature Non-metals are found as all 3 types of matter. Bromine is the only liquid non-metal.
Alkali metals are a group of elements in the periodic table. They are very reactive and normally found in compounds, not as free elements. The alkali metals are: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).
Alkali Metals: The Group of Reactive Elements
Which of the following elements is an alkali metal?
Lithium is the lightest alkali metal. Sodium is the most abundant alkali metal. Potassium is essential for life, and is found in many foods.
In pairs research and write: What characteristics do elements in Group 1, 7 and 0 have in common?
Fill in the results table as we go through the experiment?
Why do you think alkali metals have to be stored in oil?
How can knowing the characteristics of Group 1, 7 and 0 help you understand the organisation of the Periodic Table?