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Chemistry

Colloids - Tips

- Systems where one or more components have particles with average dimensions less than 1000 nanometers (1 nanometer = 1nm = 10-9m). - Most colloids look cloudy or opaque. - Scattered is the least present substance. - Dismiss
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Physics

Magnetic Force Issues

1. A rectilinear conductor is traversed by an electric current of intensity i = 2,0A when immersed in a uniform magnetic field of intensity B = 0,0002T, which is the magnetic force in a section of this conductor of length l = 20cm, In the following cases: (a) For cases where the angle formed between the magnetic field and the current is 0, the force exerted by the field is 0, for: But sin0 ° = 0, therefore F = 0.
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Chemistry

Contents (page 2)

Click on the desired subject name to view its content. FUNCTION OF INORGANIC CHEMISTRY Acids Utility Classification Nomenclature Bases Utility Classification Nomenclature Oxides Utility Classification Nomenclature Salt Utility Nomenclature STICHYOMETRY Atomic Mass (u) Molecular Mass (MM) Common Molecule Formula Equation Calculus Purity Yield Excess Limiting TABLE PERIOD TABLE?
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Chemistry

Mixture separation

The components of the mixtures may be separated. There are some techniques for performing the separation of mixtures. The type of separation depends on the type of mixture. Some of the mixture separation methods are: pickling, levitation, dissolution or flotation, sieving, magnetic separation, fractional dissolution, decantation and sedimentation, centrifugation, filtration, evaporation, simple and fractional distillation and fractional fusion.
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Chemistry

Water treatment

Not always the proper water for human consumption and for the supply of a population is in good condition. Water may be contaminated or polluted. Contamination = existence of living beings such as microorganisms and worms causing disease. Example: Schistosomes (worm that causes schistosomiasis).
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Chemistry

Chancourtois

Alexandre-Émile Béguyer de Chancourtois was a geologist born in Paris, France, on January 20, 1820. His main contribution was to observe the periodicity of the chemical elements. It was one of the first to classify the elements and thus form a periodic table. Son of Louis Aimé César Béguyer de Chancourtois and Amélie Louise Clerget, he attended the Polytechnic (1838) and the School des Mines de Paris.
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