Vocabulary
What is a magnet?
A magnet is a an object that attracts iron or steel.
What is the name of a naturally occurring magnetic mineral?
Magnetite.
What does the word dilute mean?
Dilute means there is less solute or more solvent.
Name one tool that could be used to separate one of the 4 materials.
screen
filter
magnet
evaporation dish
Vanilla extract
The flavor in rootbeer soda
Certain scents in perfume
What does concentration mean in a solution?
Concentration refers to the solute to solvent ratio. A highly concentrated solution would have a larger amount of solute or a smaller amount of solvent.
In our Koolaid experiment, how could you tell which solutions were more concentrated?
The more concentrated solutions were darker, sweeter, and/or stronger in smell.
How could you make a dilute solution more concentrated?
You could add more solute to the solution.
Name the way to extract the salt from the dry mixture.
Evaporation or evaporation dish.
Why is Starbucks great for solving problems?
They have a ton of solutions.
Define the word constraint.
A constraint is a restriction or limitation.
Name one constraint you had during the dry mixture separation challenge.
Time (20 minutes).
Materials (We could only use the materials present).
Group (We had to work with our table only).
What was the solvent in our Kool Aid solution?
water.
Name the only two ways you could remove the gravel from the dry mixture.
screen or filter
What does a larger solute to solvent ratio tell you about a solution?
It tells me that the solution is more concentrated.
Define the word criteria.
Criteria are standards used for evaluating or testing something.
Name two common solvents used to create extracts.
Water
Oil
Ethanol
If you were given 2 salt solutions and had to determine which one was more concentrated, how would you figure that out?
Weigh both solutions using a scale/balance. The heavier solution would be more concentrated because there would be more solute in the solution.
Why must the evaporation dish be the last step in the dry mixture separation design?
Name a material that could not be used to make an extract.
Plastic
Rocks
Bugs/insects
Anything that is not plant material
What is an extract and how is it made?
An extract is a solution that is made by putting plant material into a solvent.
What is one criteria Mrs. Dimitri used to determine if the dry mixture separation design worked?
It had to have separated all 4 materials in the dry mixture in order to be successful.
In our reading last week, how did the orange juice particles change after the orange juice factory evaporated most of the water?
They were closer together instead of being spread out (dispersed).
Tell steps that could be taken to successfully separate a dry mixture.
1. Use a magnet to extract the magnetite/mystery material.
2. Add water to the dry mixture.
3. Pour the mixture through a screen to separate the gravel.
4. Pour the remaining mixture through a filter to separate the powder (diatomaceous earth).
5. Pour the remaining liquid into an evaporation dish to extract the salt from the water.
How is orange juice concentrate created in the factory?
The orange juice is heated up. Evaporation causes most of the water particles to evaporate.