Vocabulary
What is a solute?
The substance that gets dissolved into a solution.
True or false water can absorb and hold large amounts of heat.
True
What is a fancy word for stirring?
Agitation
Given a number of moles and a volume, what variable are you being asked to solve for?
Molarity
What does heat do to solubility?
it affects it
Define solvent
Liquid that does the dissolving in a solution
When water sticks to things that aren't itself, that is called what?
Adhesion
Which choice won't increase the solubility of a solid in water; higher pressure or increase surface area?
Higher pressure
Moles per liter is a measurement of what?
Molarity
On a solubility graph, if you are on the line, what are you?
Saturated
Describe what polar means
Polar describes a molecule in which one or more atoms is slightly negative and one is slightly positive
Describe the property that makes water such a good solvent
Polarity
Describe surface area and in relation to reacting with water
The area exposed to the water
Given a volume and a molarity, what variable will you be asked to solve for?
On a solubility graph, you are above the line, what are you?
Super saturated
Explain what a hydrogen bond is
An attraction that a hydrogen atom covalently bonded to a highly electronegative atom has for another electronegative atom that the hydrogen is not covalently bonded to.
Describe the structure of a water molecule
What about stirring causes it to increase solubility?
It introduces fresh solvent to undissolved solute
When using the molarity triangle, what do you do to the value you are trying to solve for?
cover it with your finger to see the variables you need and what mathematics you need to perform
On a solubility graph, you are below the line, what are you?
Unsaturated
Describe capillary action
When liquid flows through narrow spaces without external forces, such as gravity; rather, the liquid's movement is aided by intermolecular forces present in between the liquid and solid surface
As water freezes, does it become more or less dense and what causes this?
Water becomes less dense because of its structure it has to spread out.
Why does heating water increase it's ability to dissolve solids but not gasses?
Hot water has more energy and therefore the water molecules have more collisions with the solid where as hot water also heats up gasses giving gasses enough energy to escape instead of being dissolved.
You have 2L of a solution with 4M, how many moles are in this solution?
8 moles
A solution of 100 grams of water is saturated with 100grams of KNO3 dissolved in it at 100 degrees Celsius, the solution is cooled down to 50 degrees Celsius where it will be saturated with 40 grams. How many grams should have precipitated out as crystal?
60 grams