1) Alkali metals are kept in oil because.... a) They are unreactive b) To stop them from reacting with air and water c) To make them less reactive 2) The most reactive alkali metal is a) Lithium b) Francium c) Potassium 3) As you go down group 1 the reactivity... a) Decreases b) Increases c) Stays the same 4) Which of these is incorrect... a) They are very reactive b) The are dull grey before cutting and shiny after c) They are hard to cut 5) What is made when lithium reacts with oxygen a) Lithium dioxide b) Lithium oxide c) Lithium hydroxide 6) They are called alkali metals because... a) They make alkaline solutions when they react with water b) They are already alkali c) They are too reactive 7) When potassium reacts with water it bursts into... a) A lilac flame b) A red flame c) A blue flame 8) This gas is given off when alkali metals react with water a) Nitrogen b) Oxygen c) Hydrogen 9) Which equation is correct for the reaction between lithium and water. a) 2Li + 2H2O --> 2LiOH + H2 b) 2Li + 4HO --> 2LiOH + H2 c) 2Li + 4H2O --> 4LiOH + O2

Alkali metals

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