1) what is the flame colour of potassium a) red b) orange c) lilac 2) What charge does a sodium ion have a) +2 b) 0 c) -1 d) +1 e) -2 3) what charge does a group 7 element have? a) +2 b) 0 c) -1 d) +1 e) -2 4) What is the most reactive group 1 metal a) Li b) Cs c) K d) Na e) Rb 5) What is the most reactive group 7 element? a) flourine b) chlorine c) bromine d) iodine e) astatine 6) How many nuetrons does Potassium have a) 19 b) 39 c) 21 d) 18 e) 20 7) What is the electronic configuration of Potassium a) 2,1 b) 2,7,8,1 c) 2,8,8,1 d) 8,8,1,2 e) 2,8,1 8) What charge does an anode have? a) positive b) Negative 9) When Lithium reacts with water what things are produced a) LiOH + H₂ b) Li0 +H₂ c) Li + OH d) LiH + O₂ e) Li + O₂ +H₂ 10) When a halogen becomes an ion it a) gains 2 electrons b) loses 1 electron c) gains 1 electron d) loses 3 electrons 11) Al³⁺+ 3e⁻ →Al this is an example of a) oxidation b) reduction 12) When Cu²⁺ reacts with sodium hydroxide the following happens a) a green/grey solid is formed b) a blue solid is formed c) an orange solid is formed 13) iron can be used as a catalyst for a) the haber process b) the contact process c) producing aluminium

by Anonymous

Leaderboard

Visual style

Options

Switch template

Continue editing: ?