A mechanical mixture is one that can be separated through mechanical means, such as a magnet or a centrifuge. Mechanical mixtures are not chemically bonded.Know More
While mechanical mixtures may be attracted to each other, there is no permanent gain or loss of electrons; they do not form different molecules.
One example of a mechanical mixture is iron filings in flour. No matter how thoroughly they are mixed, the iron filings can always be separated from the flour using a magnet. Water with microscopic particles in it is a mechanical mixture, as these particles can be removed through filtration. Oil floating on water is a mechanical mixture because oil and water do not combine. Even blood can be separated into its components, as red cells are heavier than plasma. However, salt water is not a mechanical mixture because the ions in salt are bonded to the water molecules. The salt cannot be extracted without, for example, the application of heat to cause a chemical change.
Mechanical mixtures are often created in recycling. Magnets, filtration and other methods are used to separate each recyclable component, as they have different physical properties. Given the lack of chemical bonds, it is also possible to apply chemicals that only affect one component of the mixture.Learn more about Solutions & Mixtures
A mixture is the result of combining two or more substances that do not react chemically. In order for a solution or combination to be labelled as a mixture, it must be possible to separate the individual components through physical means, without resorting to chemical reactions.Full Answer >
A stoichiometric air-fuel ratio is the exact air-fuel ratio needed to burn the fuel in the mixture completely, leading to the complete combustion of the fuel. The stoichiometric ratio differs depending on fuel type.Full Answer >
Several different methods can be used to separate mixtures, and the method chosen depends on the nature of the mixture to be separated. To separate a mixture of an insoluble substance from a liquid, you need a container with a hole in the bottom, filtration material such as charcoal or gravel, and a larger container to capture the liquid.Full Answer >
To create an oil and water emulsion, it is necessary to put in a great deal of energy and to add an emulsifier to the mixture. Creating an unstable emulsion only requires stirring the mixture fast. To make a stable version, add egg yolks.Full Answer >