CONVEX LENSES There are two types of ray diagrams discussed in IGCSE. Concave Lenses Ray Diagrams Convex Ray Diagrams Looking at the table below, we can understand that there are different applications for convex lenses. Please look at the diagram for a better understanding.

Students often confuse mole and molar volume. Hope this formula can help students

ELECTROSTATIC FORCE VS INTERMOLECULAR FORCES VS COVALENT BONDS VS IONIC BONDS Intermolecular force binds the atoms making up a molecule or a compound. These are weak forces and only exist between molecules. Intramolecular force is a stronger force and it acts to hold atoms together to form ionic or.