ib chemistry environmental chemistry


Environmental Chemistry
Three important phenomena of environmental chemistry which have been studied are "as under : (1) Acid rain, (2) Ozone depletion (3) Green house effect and Global warming...
Green Chemistry
A recent attempt for the prevention of environmental pollution is the introduction of Green chemistry. This new branch of chemistry deals with processes and products that reduce or eliminate the use and generation of hazardous substances. Concentration on this li..
CHEMISTRY AND ENVIRONMENT
Environmental chemistry deals with various chemical phenomena taking place in the environment. Environment can be defined as the physical surroundings and conditions which affect the lives of the people, plants and animals. Environment is composed of three m..
The Two Major Subdivisions
The two major subdivisions of biology which continue to be taught in undergraduate courses are botany and zoology. Botany deals with all aspects of plants like their structure, functioning, distribtuion, relationships, diseases, classification, and economic importance. Each aspect is extensi..
Thinking Probes
Can gravitational force have any effect on gas pressure? Gases are uniform in their behaviour relating to temperature and pressure. Why is the behaviour of solids and liquids different? Links Atomic Structure lie . - . or Environmental Chemis..
SALIENT FEATURES OF THE MODERN PERIODIC TABLE (see page 2)
GROUPS (1) The periodic table has eighteen vertical columns. They are known as groups, arranged from left to right in the order: IA, HA, mB, IVB, VB, VIB, VIIB, VIII (three columns), IB, IIB, IIIA, IVA, VA, VIA, VIIA and Zero. According to the latest recommendations ..
ADDITIONAL USEFUL INFORMATION
1. Hippocrates. A Greek physician, 460377 BC, was the first to recognise the problem of water pollution. 2. Sonic Boom. Sound produced by aircraft, an extreme case of noise pollution. 3. World Environment Day. June 5. 4. U.N.E.P. United Nations Environment Programme. 5. C...
Hydrogen peroxide (H202)
>~ion. Its molecule is non-planar and the molecular structure is as follows : Uses : (i) Its industrial use is as a bleach for textiles, paper pulp, leather, oils, fats etc: (ii) It is used to prepare good quality of detergents containing, sodium perborate and sodium carbonate. (iii) It is used as ..
Practice Paper -1
(4) [NiCl4]2_ -tetrahedral, paramagnetic 43. Which of the following will exhibit maximum ionic conductivity? (1) K4[Fe(CN)6] (2) [Co(NH3)6]Cl3 (3) [Cu(CN)4]Cl2 (4) [Ni(CO)4] 44. A method to protect iron from environmental destruction is (1) coating it with red lead oxide ..