Daily Chemistry Tricks

Radioactivity Property of a nucleus emitting alpha beta and gamma rays is known as radioactivity and the substance possessing the this property is called a radioactive substance the emission of these particles take place because of the instability of nucleus Alpha particle. nuclear size- the radius r of various nuclei can be approximately calculated in cm by using the relation .         r = r'A^1/3 where r' is a constant which is equal to 1.4 × 10^- 13 cm and A is  the mass number of a given nucleus. Types of radioactive decay The types of radioactive decay that occurs usually depends on whether the nucleus is above or below are to the right or to the stability belt. There are five common types of radioactive decay . Alpha emission- Beta emission- Position emission- Electron capture- Gamma emission-    

The Solid Components/waxes: the solid components are responsible for the final Structure of the product by solidifying the liquid matrix. The materials required for attaining a Reasonable body, hardness, melting point and shrinkage necessary for the easy release of theMould are together referred to as natural waxes.The solid components of the formulation are mostly natural waxes which may be classified as Follows: The hydrocarbon waxes: Example: White bees wax (a) The mineral waxes: Example: Ozokerite, ceresine (b) Hard waxes: Example: Carnauba wax, candelilla wax, hard paraffin etc. Micro crystalline waxes •Hydrocarbon Waxes : White Bees wax: It is a so known as the common wax and forms the oily base in the Formulation of lipsticks. Source: It is naturally obtained from honey combs of the honey bee Apis mellifera. Melting Point: the ranges between 62 – 65°C. Concentration: It is used in concentrations of about 3-10% of the total formulation. Available Forms

Cosmetic- Introduction - Cosmetic is a Greek word which means to 'adorn' (addition of something decorative to a person or a thing). It may be defined as a substance which comes in contact with various parts of the human body like skin, hair, nail, lips, teeth, and mucous membranes etc, Cosmetic substances help in improving or changing the outward show of the body and also masks the odour of the body. It protects the skin and keeps it in good condition. In general, cosmetics are external preparations which are applied on the external parts the body. Even in earlier days, men and women used to decorate their bodies for improvement of appearance. Men used leaves of vegetables and parts of animals whereas women use to wear colored stones and flowers round their neck and wrist. Gradually, they start using colored earth and ointments on their face and body. Even bangles and necklace made of baked earth materials became very common among the people. Eye shado