ACID WITH ALKALI: ONLINE IGCSE CHEMISTRY CLASS A universal indicator is used to measure the PH of given acid or base. There are many indicators used to.

ACID WITH METAL: ONLINE IGCSE SCIENCE CLASS Learn the concept from our online class. Understand how to form worded equations when an acid reacts with metal. Once.

PLANET EARTH:ONLINE CHEMISTRY CLASS Question 1 What is the composition of gases in our atmosphere?   Oxygen 21 per cent oxygen. Carbon Dioxide 0.04% Nitrogen 78 per.

Dr Frost and SavemyExams are two reputable organisations that provide students with comprehensive and compact worksheets. At www.onlinetuitionclass.com we utilised two of the resources to guide our.