Flashcards
quimica
Flashcards do conjunto (10)
- 1—sieving: a method in which two or more components of different sizes are separated from a mixture on the basis of the difference in their sizes. Thus, it cannot separate two substances in a mixture which have the same size. For example, it cannot separate a mixture of chalk powder from flour.
- 2—Evaporation: Evaporation is one of the two forms of vaporization. It is the process whereby atoms or molecules in a liquid state (or solid state if the substance sublimes) gain sufficient energy to enter the gaseous state. It is the opposite process of condensation.
- 3—Distillation: is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation.
- 4—Decantation: In the laboratory, the process of pouring away a liquid while leaving a solid (often a precipitate) behind. Decanting a liquid from a solid using a stirring rod.
- 5—Crystallization: or crystallisation is the (natural or artificial) process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.
- 6—Filtration: is the process of separating suspended solid matter from a liquid, by causing the latter to pass through the pores of some substance, called a filter. The liquid which has passed through the filter is called the filtrate.
- 7—Magnetism: Magnetism is the power to attract. It refers to the attraction to iron and other metals in electric currents and magnets, or to the other kind of attraction — where people want to be close to each other. ... Chemistry and earth science are two classes you might learn about magnetism in.
- 8—Paper chromatography, in analytical chemistry, technique for separating dissolved chemical substances by taking advantage of their different rates of migration across sheets of paper. It is an inexpensive but powerful analytical tool that requires very small quantities of material
- 9—Centrifugation: is the technique which involves the application of centrifugal force to separate particles from a solution according to their size, shape, density, viscosity of the medium and rotor speed. ... Centrifugation of protein solution, for example, allows elimination of impurities into the supernatant.
- 10bibliografhy1- https://www.google.com/search?q=centrifuging+definition+chemistry&hl=es&source=lnms&tbm=isch&sa=X&ved=2ahUKEwivi_TB2sDqAhWlY98KHWtDD7IQ_AUoAXoECA0QAw&biw=1440&bih=821
2- https://www.google.com/search?q=paper+chromatography+definition+chemistry&source=lmns&bih=821&biw=1440&hl=es&ved=2ahUKEwjq8Lak2sDqAhXGTTABHeE7BpAQ_AUoAHoECAEQAA
3- https://www.google.com/search?q=magnetism+definition+chemistry&hl=es&source=lnms&tbm=isch&sa=X&ved=2ahUKEwid6-mE2sDqAhWRg-AKHcgXD8cQ_AUoAXoECAoQAw&biw=1440&bih=821
4- https://www.google.com/search?q=filtration+definition+chemistry&source=lmns&bih=821&biw=1440&hl=es&ved=2ahUKEwiD_ePj2cDqAhVDQDABHeQ_A28Q_AUoAHoECAEQAA
Informações
- Descrição
- fichas de quimica
- Criado por
- Brixius Tona Rafael Antonio
- Visualizações
- 8
- Avaliação