SD & DD

Question 1

Single displacement

Answer 1

• like replaces like
• metal replaces metal / non-metal replaces non-metal
• must include a compound metal and an element metal
• the solid metal must be higher in the list for a reaction to happen

Question 2

Double displacement

Answer 2

• reactants are dissolved in water
• become ions
• if both reactants are soluble no reaction, if one is insoluble there is a reaction
• cross over