Concentrations expressed in molality are used in the analysis of vapour pressure and temperature changes-related solution properties. Molality is... View Article
Potassium dichromate is a salt of potassium and is the dichromic acid dipotassium salt. As an oxidising agent, an allergen and a sensitiser, it... View Article
In most cases, synthetic polymers are manufactured from petroleum derivatives. Low cost, fair specific strength, chemical resistance and ease of... View Article
Molecules of water form hydrogen bonds with each other. A hydrogen bond with a partial positive charge on the hydrogen of other molecules may... View Article
Sodium (alkali metal) ionisation energy is 496 KJ/mol, while the first ionisation energy of chlorine is 1251.1 KJ/mol. Because of this disparity... View Article
A light-rotating chiral molecule is said to be optically active. If the molecule rotates in the clockwise direction of plane-polarized light, we... View Article
As ethanol is applied to a small piece of sodium wire, it reacts slowly to provide hydrogen gas bubbles and leaves a colourless sodium ethoxide... View Article
The water molecule is so abundant that only memorising that water is a bent molecule is wise. In order to complete its octet, oxygen has 6... View Article
Coordination compounds are molecules that serve one or more ligands-bound metal centres (atoms, ions, or molecules that donate electrons to the... View Article
Magnesium oxide (MgO) is an ionic substance that crystallises and breaks into 100 and 111 planes in the rock-salt structure. In nature, it is... View Article
The maximum useful work that can be obtained from a device at constant temperature and constant volume in a reversible phase is proportional to... View Article
A spontaneous reaction is a reaction that under the conditions under which the reaction occurs, favours the forming of products. During a... View Article
Between two atoms that similarly share their electrons, nonpolar bonds form. When two bonded atoms exchange electrons in an unequal manner, polar... View Article
Methane (CH4) contains just one carbon atom, so the Wurtz reaction, which requires two alkyl halide molecules, can not be prepared. The Wurtz... View Article
Atomic radius reduces over a span of time as valence electrons are introduced to the same energy range at the same time as protons rise in the... View Article
A buffer is a solution containing either a weak acid and its salt or a weak base and its salt, which is resistant to changes in pH. Buffers are... View Article
In the theory of the screw, a screw gauge runs. We get the linear rotation of the main scale by spinning the screw handle. To measure the wire... View Article
A group of two or more atoms held together by chemical bonds is a molecule. A composite is a material that is formed in a fixed proportion by two... View Article
Corrosion is when a refined metal, such as its oxide, hydroxide or sulphide state, is spontaneously converted to a more solid form, which... View Article
In the circulation of liquids, convection currents play a part. The effect of differential heating is convection currents. Lighter (less dense),... View Article
