Every day, we come into contact with chemicals and compounds. Chemical compounds make up the cleaning supplies we keep under the kitchen sink as well as the medicines we keep in our medicine cabinets. These substances are made up of a specific number of atoms that are organized in a specific way. We need to [...]
Introduction Hydrocarbons are any organic compounds that contain only carbon and hydrogen Hydrocarbons are energy-rich because of their high carbon content. They are burned in oxygen (combustion) to release their energy. Crude oil, or petroleum, is the main source of liquid hydrocarbons. Crude oil is a mixture of various hydrocarbons, which can be separated via [...]
Though scientists have not developed any magic love potions that make someone fall and stay in love with you, but there is a lot of chemistry involved in feeling attachment. And if you have ever wondered exactly what chemicals are involved in feeling love, then you are in much luck as this article introduces you [...]
For Chemistry students who may have questions about how to accurately read a meniscus during Chemistry practicals, this is arriving just in time. According to about.com, the meniscus is the curve seen at the top of a liquid in response to its container. The meniscus can be either concave or convex, depending on the surface tension of the [...]
Chances are you’ve been studying Chemistry all wrong…if you’re a Chemistry science-inclined student that is. But you cannot afford not to study this all important subject the right way. It is indeed a very important subject and the way you go about studying determines how well your performance and mastery of it will be. That [...]
IUPAC Nomenclacture of Inorganic Compounds and Concept of Oxidation Number Oxidation number is the charge on the valency of an element, i.e. Oxidation state = Valency + Charge The valency of metal carries a positive charge, e.g. Na+ while the valency of non-metal carries the negative charge, e.g. Cl- The total oxidation state of any [...]
Chemistry, SS 2 Week: 6 Topic: Electrolysis What is Electrolysis? Ionic substances contain charged particles called ions. For example, lead bromide contains positively charged lead ions and negatively charged bromide ions. Electrolysis is the process by which ionic substances are decomposed (broken down) into simpler substances when an electric current is passed through them. In [...]
Chemistry SS 3 Week: 7 Topic: Preferential Discharge of Ions during Electrolysis There are certain factors that affect the discharge of electrons at electrodes. Factors Affecting the Preferential Discharge of Ions in Electrolysis The position of ion in electrochemical series. The concentration of ion. The nature of electrode. Relationship between position of ions in the [...]
Topic : Water and Its Properties Content: Water Water Cycle Types of Natural Water Purification of Water Physical Properties of Pure Water Chemical Properties of Pure water Benefit/Uses of Water A. Water Water is the most abundant chemical substance in the world. It covers 70 per cent of the surface of the earth. It occurs [...]
Week: 3 Topic: Families of Elements Group 1: Alkali Metals The members of this family include: lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs) and francium (Fr). They are soft metallic solids, with metal properties such as: One valence electron Shiny and lustrous High thermal and electrical conductivities Low densities, increasing with atomic [...]