what r the uses and misuses of chemistry in daily life.?

Answer 1

Chemistry (from Greek χημεία khemeia[1] meaning "alchemy") is the science of matter at the atomic to molecular scale, dealing primarily with collections of atoms, such as molecules, crystals, and metals. Chemistry deals with the composition and statistical properties of such structures, as well as their transformations and interactions to become materials encountered in everyday life. Chemistry also deals with understanding the properties and interactions of individual atoms with the purpose of applying that knowledge at the macroscopic level. According to modern chemistry, the physical properties of materials are generally determined by their structure at the atomic scale which is determined by the properties and energies of the interactions.

uses
Cosmetics

Cosmetics - learn about the chemistry in curling and dying your hair
Chemistry of Cosmetics - learn about lipstick, perfume and beauty products for the skin and hair
Science Net - use this site to look for the chemistry in some everyday activities
National Chemistry Week - read this article to learn more about chemistry in cosmetics

Food
Jello - learn the chemistry of this dessert
Kitchen Chemistry - shows how everyday cooks uses chemical reactions in cooking
Food Chemistry - learn the many kitchen recipes that use chemistry

Fabric
Chemistry Saves the Clothes - this site will show the chemistry in stain removal


Cleaning
Soaps and Chemistry


Other Uses of Chemistry in Everyday Life
Chemistry of Air Bags - this site will amaze you
Photography - learn the chemical reactions involved in a picture
Chemistry of Photography
Light sticks - get the chemistry behind the glow-in-the-dark

ROC curves have become the standard for describing and comparing the accuracy of diagnostic tests. Not surprisingly, ROC curves are used often by clinical chemists. Our aims were to observe how the accuracy of clinical laboratory diagnostic tests is assessed, compared, and reported in the literature; to identify common problems with the use of ROC curves; and to offer some possible solutions. METHODS: We reviewed every original work using ROC curves and published in Clinical Chemistry in 2001 or 2002. For each article we recorded phase of the research, prospective or retrospective design, sample size, presence/absence of confidence intervals (CIs), nature of the statistical analysis, and major analysis problems. RESULTS: Of 58 articles, 31% were phase I (exploratory), 50% were phase II (challenge), and 19% were phase III (advanced) studies. The studies increased in sample size from phase I to III and showed a progression in the use of prospective designs. Most phase I studies were powered to assess diagnostic tests with ROC areas >/=0.70. Thirty-eight percent of studies failed to include CIs for diagnostic test accuracy or the CIs were constructed inappropriately. Thirty-three percent of studies provided insufficient analysis for comparing diagnostic tests. Other problems included dichotomization of the gold standard scale and inappropriate analysis of the equivalence of two diagnostic tests. CONCLUSION: We identify available software and make some suggestions for sample size determination, testing for equivalence in diagnostic accuracy, and alternatives to a dichotomous classification of a continuous-scale gold standard. More methodologic research is needed in areas specific to clinical chemistry.

Answer 2

People who are experiencing stress may notice some of the following signs: anxiety or panic attacks a feeling of being constantly pressured, hassled, and hurried irritability and moodiness physical symptoms, such as stomach problems, headaches, or even chest pain allergic reactions, such as eczema or asthma problems sleeping drinking too much, smoking, overeating, or doing drugs sadness or depression Everyone experiences stress a little differently. Some people become angry and act out their stress or take it out on others. Some people internalize it and develop eating disorders or substance abuse problems. And some people who have a chronic illness may find that the symptoms of their illness flare up under an overload of stress. I would like to hear more from you.

Answer 3

uses many
every thing depends on chemistry
misuses
nuclear bomb is the greatest misuse of both chemistry and physics

Answer 4

all medicines which are chemicals -we all know the uses medicals. Misuses are poisons consumed for suicide - Extremist using Chemical compounds for blasting etc etc.

Answer 5

The biggest one I can think of is the making of illegal drugs then maybe poison. The next could be homemade bombs. Chemical weapons, bombs and such can be see as good or bad depending on your side of view.

Answer 6

use --pleasure
misuse-- over popullation!!

hehe
good chemistry

Answer 7

gasoline = pollution!!!!

Answer 8

Pollution !!!!!!!!!!!!!!