A
What are solutions?
Solutions are two or more substances that cannot be separated.
What are mixtures?
Mixtures are two or more substances that can be separated.
You can always see the parts of a solution.
False
What is called if a solution or mixture have a uniformed composition?
They are called homogenous.
What happens to the solute in a solution?
A. It disappears
B. It melts
C. It dissolves in the solvent
D. It sinks to the bottom
What are the two parts to create a solution?
solutes and solvents
How can a mixture made up of solids be separated?
They can be separated by hand, filtration, sieving etc.
Solutions do not need a solvent.
False
In a saltwater solution, the solute is:
Salt
Which method would best separate sand and water?
A. Evaporation
B. Filtering
C. Magnetism
D. Freezing
Define a solvent
A solvent is what a solute needs to dissolve into.
What are homogenous mixtures?
Homogenous mixtures are when two substances mixes and cannot be identified because are uniformly distributed.
Mixtures need pure substances to be created?
True
Which mixture is heterogeneous?
A. Air
B. Lemonade (no pulp)
C. Saltwater
D. Trail mix
Give one example of a solution found in everyday life.
Saltwater, soda, air, or sugar water
Define a solute.
A solute needs to dissolve into a solvent.
What are heterogenous mixtures?
Heterogenous mixtures are when two things that create a mixture are different and can be seen easily.
Can a mixture be composed of different amounts?
Yes
Is air a mixture or a solution? Explain.
Air is a solution because different gases are evenly mixed together.
Can a mixture be both a solid and a liquid at the same time? Give an example.
Yes. A mixture like cereal in milk has both solid and liquid parts.
Can solutions be separated and give an example.
Yes, for example distillation.
Why is soda considered a solution even though it has bubbles?
The gas is dissolved evenly in the liquid under pressure.
A student stirs salt into water, but some salt remains at the bottom. What does this mean in terms of solubility, diluted, concentrated or saturated?
The substance is saturated.
Is muddy water a homogeneous or heterogeneous mixture? Explain.
Heterogeneous, because the dirt particles are not evenly mixed and can be seen.
A student mixes sugar into hot water. Why does the sugar dissolve faster than in cold water?
Hot water has more energy, which helps dissolve the sugar faster.