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 measure the acidity of a solution. Among the indicators are Methyl Orange PH Meter Universal indicator Litmus Paper. Universal indicator Red shows.

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 you have understood how to write a worded equation, proceed with your understanding to write the equation in symbols. Make sure you.

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 cent nitrogen  Inert Gas Argon makes up about 1% of the atmosphere  Question 2 Please list the sources of pollution and their.