Explanation: The air we breathe, what we drink, as well as products in our household - these are a few examples of solutions we encounter every day. Related questions What are some examples of mixtures?
How do compounds and mixtures differ? How can mixtures be classified? How do mixtures affect boiling point? What mixtures are heterogeneous? Examples of solutions include sugar water and powdered drink mix in water, while alloys include sterling silver and bronze. Emulsions are homogeneous mixtures, although they often become heterogeneous when examined microscopically.
Examples of emulsions are homogenized milk, mayonnaise, and egg yolk. It may be impossible to visually distinguish between a homogeneous mixture and a pure substance.
However, you can tell them apart if you know their composition. There is more than one component in a homogeneous mixture, while a pure substance consists of a single element or compound. Iron is a pure substance, while steel is a homogeneous mixture. Name three alloys and list what they are composed of. Review Questions What is a mixture? What is a homogeneous mixture? Are all solutions homogeneous mixtures? Can homogeneous mixtures be separated into their components?
Learning Objectives Define heterogeneous mixture. Define phase. Give examples of heterogeneous mixtures.
Figure 2. Summary A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. A phase is a separate layer in a heterogeneous mixture. What are the phases in a glass of iced tea? How is blood a heterogeneous mixture? Review Questions Define a heterogeneous mixture. Why is vegetable soup a heterogeneous mixture? How many phases are in a heterogeneous mixture? Flickr: Yortw. Courtesy of Dr. Oxygen gas, a nonpolar molecule, does dissolve in water—it is this oxygen that the fish take in through their gills.
The reason we can enjoy carbonated sodas is also due to a nonpolar compound that dissolves in water. In this case, to keep as much gas in solution as possible, the sodas are kept under pressure. Note that every time charged particles ionic compounds or polar substances are mixed, a solution is formed.
When particles with no charges nonpolar compounds are mixed, they will form a solution. However, if substances with charges are mixed with other substances without charges, a solution does not form.
When an ionic compound is considered "insoluble", it doesn't necessarily mean the compound is completely untouched by water. All ionic compounds dissolve to some extent. An insoluble compound just doesn't dissolve in any noticeable or appreciable amount. What is it that makes a solute soluble in some solvents but not others?
The answer is intermolecular interactions. The intermolecular interactions include London dispersion forces, dipole-dipole interactions, and hydrogen bonding as described in Chapter
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