Pure Substances vs. Mixtures
Solutions, Colloids, Suspensions
Types of Solutions
Solubility Graphs
Surprise Me
100
A mixture in which all the different substances are visible
Heterogeneous Mixture
100
If a mixture looks transparent, what type of mixture must it be?
Solution
100
A solution that contains very little solute and can still dissolve more
Unsaturated Solution
100
What kind of information is shown on a solubility graph?
The amount of solute that can dissolve at a certain temperature for a particular substance
100
Gatorade would be a great example of which type of mixture?
A solution
200
A substance that contains only the same type of particles
Pure Substance
200
If a mixture has 2 or more visible layers to it, what type of mixture must it be?
Suspension
200
A solution that contains so much solute that it becomes unstable and can form crystals
Supersaturated solution
200
How many grams of KNO3 will dissolve at 60°C?
100 g
200
Why can some mixtures display the Tyndall Effect, but not others?
It depends on particle size; larger particles can reflect light
300
A mixture in that looks uniform despite containing different substances
Homogeneous Mixture
300
Which type of mixture(s) are homogeneous?
Solutions and Colloids
300
A solution that contains the maximum amount of solute and cannot dissolve anymore
Saturated solution
300
How many grams of NH4Cl will dissolve at 70°C?
60 g
300
Milk is a great example of which type of mixture?
A colloid
400
The substance that is being dissolved to make a solution
Solute
400
Which type of mixtue(s) scatter light?
Colloids and sometimes Suspensions
400
A student added some salt to water in a test tube as shown below. Which type of solution would this be? How do you know?
Saturated solution; some of the undissolved solute is seen at the bottom
400
70 g of NH3 dissolved at 10°C. What type of solution is this? How did you know?
Saturated solution; the point fell on the NH3 line
400
The reflection of light by the particles within a mixture is a called what?
The Tyndall Effect
500
The substance that does the dissolving in a solution
Solvent
500
Which type of mixture(s) can be separated with a filter?
Suspensions
500
A student was creating a solution and observed the following in their flask. Which type of solution did they make? How do you know?
Supersaturated solution; crystals began to form at the bottom of the flask
500
90 g of NaNO3 dissolved at 40°C. What type of solution is this? How do you know?
Unsaturated solution; point falls under the NaNO3 line
500
Name the 3 factors that speed up the process of dissolving
Stirring, Heating, and decreasing the particle size