In this video, we will focus on Group 0 elements, which we call the noble…
Tag: Chemistry Revision
In this video, we will focus on Group VII elements, which we call the halogens.…
General The elements in Group I of the periodic table are called alkali metals. They…
In this video, we will explore more on the Periodic Table, and find out what…
Basics Energy cannot be created or destroyed. However, it can be changed from one form…
Syllabus Objectives At O levels, students must be able to perform calculations involving the number…
Question Which substance contains the greatest number of atoms in 1 g?iodine (I2); iron (Fe)…
At O levels, students must be able to describe, using dot-and-cross diagrams, the formation of…
Question Sodium hydroxide reacts with sulfuric acid. The equation for the reaction is shown.2NaOH +…
When heated, two moles of X give one mole of oxygen and two moles of…
