Solutions & Mixtures
Learn about solutions, colloids, and mixtures. Calculate concentration and density. Examine colligative properties, including freezing point depression, boiling point elevation, and osmotic pressure.
Boiling Point Elevation
Boiling point elevation occurs when the boiling point of a solution becomes higher than the boiling point of a pure solvent. Here's a closer look at what boiling point elevation is and how it works.
Boiling point elevation occurs when the boiling point of a solution becomes higher than the boiling point of a pure solvent. Here's a closer look at what boiling point elevation is and how it works.
Buffers
Buffers are an important concept in acid-base chemistry. Here's a look at what buffers are and how they function.
Buffers are an important concept in acid-base chemistry. Here's a look at what buffers are and how they function.
Freezing Point Depression
Freezing point is one of the colligative properties of matter. Here's a look at what freezing point depression is and how it works.
Freezing point is one of the colligative properties of matter. Here's a look at what freezing point depression is and how it works.
Calculating Concentration
Do the units for solution concentration confuse you? Get definitions and examples for calculating percent composition by mass, mole fraction, molarity, molality, and normality. I've also included a bit of information on dilutions.
Do the units for solution concentration confuse you? Get definitions and examples for calculating percent composition by mass, mole fraction, molarity, molality, and normality. I've also included a bit of information on dilutions.
Solutions, Suspensions, Colloids, and Dispersions
Learn how to distiguish between solutions, suspensions, colloids, and dispersions. Get examples of the different types of mixtures.
Learn how to distiguish between solutions, suspensions, colloids, and dispersions. Get examples of the different types of mixtures.
Aqueous Solution Dilution
Here is a worked example of how to calculate a dilution of a stock solution.
Here is a worked example of how to calculate a dilution of a stock solution.
Concentration and Molarity
These are examples of concentration and molarity calculations, with links to other worked chemistry problems and homework help.
These are examples of concentration and molarity calculations, with links to other worked chemistry problems and homework help.
Fireworks in a Glass
Fireworks are a beautiful and fun part of many celebrations, but not something you want kids to make themselves. However, even very young explorers can experiment with these safe underwater fireworks.
Fireworks are a beautiful and fun part of many celebrations, but not something you want kids to make themselves. However, even very young explorers can experiment with these safe underwater fireworks.
Make a Mixture and a Compound from Iron and Sulfur
Do you know the difference between a mixture and a compound? Combine iron and sulfur to make a mixture and then react them to form a chemical compound.
Do you know the difference between a mixture and a compound? Combine iron and sulfur to make a mixture and then react them to form a chemical compound.
Molality Example Problem
Here is an example of calculating concentration or molality of a solution.
Here is an example of calculating concentration or molality of a solution.
Molarity Example Problem
Here is an example of calculating concentration or molarity of a solution.
Here is an example of calculating concentration or molarity of a solution.
Solubility of Ionic Compounds in Water
Here's a table of the solubility rules for common ionic solids in water, as well as an explanation of the main factors which affect solubility.
Here's a table of the solubility rules for common ionic solids in water, as well as an explanation of the main factors which affect solubility.