The three general types of mixtures in chemistry are solutions, suspensions and colloids. All mixtures contain at least two different substances and can be liquids, gases or solids.Know More
Solutions are the simplest mixture, consisting of two substances that interact and have reasonably small particle sizes. A solution has a solvent and at least one solute, depending on how many substances are being mixed together. If any of the substances changes phase while making the solution, it is considered a solute. If there are no phase change between two or more substances, the substance that there is the most of is considered the solvent, while all the rest are solutes.
A suspension is a mixture where components must be forced to distribute evenly. In time, if left to rest, the components will separate into layers. A common example of this is oil and water, which needs to be shaken to ensure a temporarily uniform solution.
Colloids are mixtures where substances are evenly distributed, but not fully dissolved due to a large particle size. The substances with the largest particles can be filtered out through a membrane. To test for a colloid, a light is shone through the mixture. The light will simply shine through a true solution, but be clearly visible when shone on a colloid mixture.Learn more in 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 >
You can compare and contrast mixtures and pure substances by determining if the substance can be separated into homogeneous materials. Determine if the substance can be changed into a different substance as well.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 >
Some examples of mixtures include metal alloys containing two or more metals, salt dissolved in water, air containing various gases, sand mixed with tiny rocks and pebbles, and trail mix with different types of nuts and raisins. When two or more substances mix and retain their chemical properties through the process, they form a mixture. The individual components in a mixture can be separated.Full Answer >