Vocabulary
When lemonade powder is dissolved in water, what is the solvent?
Water
A mixture is 2 substances that can be easily _____
separated
A solution is made with a _____ and a ______.
solute and a solvent
Complete: The particles of a __________ are too small to be seen without a microscope yet they are large enough to scatter a beam of light.
colloid
Name 2 methods we can use to separate mixtures.
magnets, sifting, filtering, settling, evaporation
What happens when someone gets decompression sickness (not symptoms, what physically happens to your body?)
If a diver swims up too fast, the dissolved nitrogen could suddenly come out of the blood and get lodged in the blood vessels.
When Koolaid is mixed with water, what is the solute?
Koolaid
Give an example of a mixture
Give an example of a solution
Example: salt water
True or False? A mixture can be both homogenous and heterogeneous at the same time.
FALSE
In a mixture of salt and sand, what method would you use to separate the ingredients?
Evaporation (after you mix the salt and sand with water and strain the mixture)
To dilute a mixture means to make it less __________
Concentrated
What are the two types of mixtures?
Homogenous and heterogenous
Explain what makes solutions different from heterogenous mixtures.
The ingredients are evenly mixed. Every bite, sip, or piece is the same.
True or False? Mixtures can be made of matter in more than one state/phase.
True: For example: A soda is made of liquids and gasses.
Why do people use coffee filters when making coffee?
To separate the solid coffee grounds from the liquid coffee that they drink.
Mixtures that look the same all around are ___________
homogeneous
All solutions are mixtures, but not all mixtures are solutions. T or F
True
Some mixtures are solutions and some solutions are mixtures. T or F
False
Individual components of a mixture keep their properties - T or F
True
How would you separate iron filings from sugar?
Use a magnet
A heterogeneous mixture that does not dissolve and the different parts will separate is a _____________.
Suspension
What is the difference between a heterogenous mixture and a homogenous mixture?
A heterogenous mixture is not evenly mixed and can be easily separated. A homogenous mixture is a solution, and its ingredients are evenly mixed.
How can a solution be made more concentrated? Name 2 ways
Add more solute or remove some of the solvent.
Which substance is known as the "universal" solvent?
Water
Why would a scientist boil a solution that contains water?
to make the water evaporate