Chemistry Resources (page 3)

In the collision theory, the rate of a chemical reaction is determined by the frequency of effective collisions between reactant particles. Effective collisions are those that have su...

This research focused on preparing hydrogels with controlled drug release properties to control gastrointestinal tract bacterial infection. Chitosan (CS) and polyvinylpyrrolidone (PVP...

KS3 Chemistry by Atif Choudri, BScAgenda• Atoms• Elements Introduction• Elements Contd.• Compounds• Mixtures• Exercises Atoms• Atoms are the basic building blocks of m...

REDOX REACTIONSMany chemical reactions are redox reactions, where reduction and oxidation occur at the same time. Traditionally, oxidation was gain of `oxygen`, such as complete combu...

Determination of formula of hydrated magnesium sulfate.Definitions:Water of crystallisation refers to water molecules that form an essential part of the crystalline structure of a com...

Independent and dependent variables are identified before an experiment begins and results from an experiment are usually plotted in a graph. They are needed as part of GCSE and A Lev...

One of the most common tests in organic chemistry in Year 11 and in particular at Year12 is to tell the difference between an alkane and alkene. In a test-tube containing about 1cm3 o...

An atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom`s mass and is co...

Chemistry is a fascinating field of study that helps us understand the properties and reactions of the chemicals that make up the world around us. As a GCSE or A-level student, studyi...

What is matter? Is a glass with some water in it half empty or full? Actually, neither is correct. The glass is completely full, half full of water and half full of air. What is air...