Solutions :Solutions


What is a solution? :What is a solution? A solution is a homogeneous mixture two substances that are combined and look and feel like one object. the same uniform appearance and composition throughout. These mixtures could be in the form of a liquid, solid or gas.


There are two components of a Solution :There are two components of a Solution A Solvent is a liquid that dissolves a solid, liquid, or gas resulting in a solution. usually present in largest quantity What is the common solvent in everyday life?


Water - the Universal Solvent :Water - the Universal Solvent The most common solvent in everyday life is water-it is called the 'universal solvent' because it can dissolve many materials


Components of a Solution :Components of a Solution A solute is dissolved in a solvent. solute is the substance being dissolved an aqueous solution has water as solvent usually present in smaller quantity than solvent, may have a phase different from the solution


Characteristics of Solutions :Characteristics of Solutions The distribution of particles is uniform. The components do not separate on standing. The components cannot be separated by filtration.


Solubility :Solubility Solubility is a measure of how much solute will dissolve into the solvent. How can you tell is a solid is soluble? – If it dissolves!


The Rate of Dissolving :The Rate of Dissolving - the speed at which the solute dissolves in a solvent is called the rate of dissolving and can be affected by: - agitation (stirring or shaking)- temperature- pressure Generally, as temperature increases, the solubility of solids also increases and vice versa.


Temperature :Temperature Generally in many cases solubility increases with the rise in temperature and decreases with the fall of temperature. Everyday ExampleWarm sodas fizz more than cold sodas when you open them because CO2 gas is less soluble at higher temperatures.


So How Much Can Be Dissolved? :So How Much Can Be Dissolved? A saturated solution contains the maximum amount of a solute that will dissolve in a given solvent at a specific temperature. In a saturated solution if you try to strengthen it more all the crystals will just fall to the bottom without dissolving.


How Much Can Be Dissolved? :How Much Can Be Dissolved? A supersaturated solution contains more solute than is present in a saturated solution at a specific temperature.


How Much Can Be Dissolved? :How Much Can Be Dissolved? http://www.stevespanglerscience.com/experiment/00000078


Degrees of Saturation :Degrees of Saturation A saturated solution contains the maximum amount of solute. Additional solute won’t dissolve. An unsaturated solution contains less than the maximum amount of solute. Additional solute will dissolve. A supersaturated solution contains more than the maximum amount of solute and is unstable. Additional solute causes rapid crystallization.