Reciprocal Graphs - Sketching What are reciprocal graphs? Reciprocal graphs involve equations with an Χ term on the denominator e.g. There are two basic reciprocal graphs to know for A level...
Formulae & Names of Ionic Compounds Ionic compounds are formed from a metal and a nonmetal bonded together Ionic compounds are electrically neutral; the positive charges equal the negative char...
Ionic Lattices The ions form a lattice structure which is an evenly distributed crystalline structure Ions in a lattice are arranged in a regular repeating pattern so that positive charges cancel o...
Sketching Polynomials Sketching the graph of a polynomial Remember a polynomial is any finite function with non-negative indices, that could mean a quadratic, cubic, quartic or higher power ...
Forming Ions As a general rule, metals are on the left of the Periodic Table and non-metals are on the right-hand side Ionic bonds involve the transfer of electrons from a metallic element to a non...
Halogens The halogens These are the group 17 non-metals that are poisonous and include fluorine, chlorine, bromine, iodine and astatine Halogens are diatomic, meaning they form molecules of two ato...
Alkali Metals The group 1 metals The group 1 metals are called the alkali metals because they form alkaline solutions with high pH values when reacted with water Group 1 metals are lithium, sodium,...
Oxides Oxides across a period The acid-base character of the oxides provides evidence of chemical trends in the periodic table The broad trend is that oxides change from basic through amphoteric to...
Improper Algebraic Fractions What are top-heavy (improper) rational expressions (or algrbraic fractions)? The degree of the numerator is greater than or equal to the degree of the denominato...
