Practise placing metals from reaction evidence and using the reactivity series to predict displacement, acid or water reactions, extraction and cell voltage.
This question is about chemical reactions and electricity.
The reading on the voltmeter can be increased if either zinc or iron is replaced by another metal.
Name a metal that can replace zinc and increase the reading on the voltmeter.
Name a metal that can replace iron and increase the reading on the voltmeter.
Iron is a transition element. Potassium is a Group I element.
Chemical properties of some Group I elements are shown in the table.
Name the gas produced when Group I elements react with water.
Name the solution formed when potassium reacts with water.
Use the information in (a) and (b) to put the three metals lead, nickel and silver in order of reactivity. most reactive
least reactive