What are the types of solubility?
Qualifiers used to describe extent of solubility
| Term | Mass parts of solvent required to dissolve 1 mass part of solute |
|---|---|
| Soluble | 10 to 30 |
| Sparingly soluble | 30 to 100 |
| Slightly soluble | 100 to 1000 |
| Very slightly soluble | 1000 to 10,000 |
What is the solubility of potassium nitrate in 100g of water at 60?
Task 1: Producing a graph to represent solubility data
| Potassium nitrate (KNO3) | Sodium nitrate (NaNO3) | |
|---|---|---|
| Temp. °C | g / 100 g water | g / 100 g water |
| 50 | 84 | 114 |
| 60 | 108 | 124 |
| 70 | 136 | 134 |
What is the best example of immiscible liquids?
Oil and water are examples of immiscible liquids – one floats on top of the other.
What liquids can mix with water?
Because water molecules are polar, any liquid that does not have polar molecules—such as oil—is usually immiscible with water. Rubbing alcohol molecules have a polar and nonpolar part, which means they are able to form hydrogen bonds with water and therefore able to mix with it.
What happens when oil and water are mixed?
So what happens when you try to mix oil and water? The water molecules attract each other, and the oil molecules stick together. That causes oil and water to form two separate layers. Water molecules pack closer together, so they sink to the bottom, leaving oil sitting on top of the water.
What happened when solids were mixed with liquids?
If a solid dissolves on mixing its particles break apart and form a loose association with the liquid (solvent) particles. A solid will not dissolve in a liquid if its particles are unable to form links to the liquid particles. These produce colourless solutions which can reinforce the idea of a solid disappearing.
What happens when two substances are mixed together?
In simplest terms, a chemical change (or chemical reaction) occurs when two substances are mixed together and transform into a third substance. Not all substances react chemically when mixed together, however. For example, some substances, when mixed together, remain simply a mixture of those two substances.
What is formed if you mix two or more substances physically?
A mixture is created when two or more different substances are physically combined and can be separated back into its original substances. A chemical reaction occurs when two or more substances are combined to form a new substance and cannot be separated back into its original substances.