30 Mar

Relative formula mass

For today’s Chemistry tuition, we’ll be learning about relative formula mass. Atoms have very little mass. Instead of using their actual masses in kilograms, we use their relative atomic masses. Relative atomic mass is given the symbol Ar. The Ar of an element is the...

13 Mar


Have you ever looked at a gold bar and wondered how much space it is taking up? To find its volume, you need to multiply its cross-sectional area by its height. The cross-section of a gold bar is that of a trapezium. A trapezium is a...