Qualitative Analysis of SaltsWhat is qualitative analysis?Qualitative analysis of a salt Analysis is a chemical technique used to identify the ions present in a salt by analysing its physical and chemical properties and hence determine the identity of t…

How do you Write a Chemical Equation?All chemical reactions are represented by chemical equations. A chemical equation is a shorthand representation of a chemical reaction using the symbols and formulae of substance involved in the chemical reaction. Th…

Physical and Chemical Properties of Group 18 ElementsElements in Group 18 of the Periodic Table are: Helium, Neon, Argon, Krypton, Xenon, Radon These elements are known as noble gases.Physical properties of noble gases1. Table shows some physical propert…

How is electrolysis used in the industry?Application of electrolysis in industry:There are many industrial applications of electrolysis. The most common applications are as follows: Extraction of metalsPurification of metalsElectroplating of metalsExtrac…

What is the periodic table of the elements? What is the history of the periodic table?The scientists involved in the development of the Periodic Table were: Antoine Lavoisier, Johann W. Dobereiner, John Newlands, Lothar Meyer, Dmitri Mendeleev and H.J.G.…

What does electrochemical series mean?The Electrochemical Series:The electrochemical series is an arrangement of metals based on the tendency of each metal atom to donate electrons.The greater the tendency to donate electrons, the more electropositive i…

How has the Model of the Atom Changed Over the Years?The Atomic StructureThe historical development of atomic models: Over the last 100 years, scientists have done investigations which show that atoms are made up of even smaller particles.The atom was im…

Physical and Chemical Properties of Group 17 ElementsGroup 17 Elements: The HalogensThe elements in Group 17 are: Fluorine Chlorine Bromine Iodine AstatineThese elements are known as halogens.(a) Halogen is a Greek word which means salt-former’. (b) Thi…

How is Sulfuric Acid Made?Manufacture of sulphuric acid in industry:In industry, sulphuric acid is manufactured by Contact process.Sulphur, air or oxygen and water are the raw materials for the manufacture of sulphuric acid.The Contact process consists …

Why Chemistry is So Important?History of chemistryChemistry already existed a long time ago. As early as 8 000 years ago, people in the Middle East extracted metals such as copper and iron for making tools and ornaments. The Egyptians knew how to make gl…