DEFINITIONS
A combination of two or more substances that are physically combined and can be separated.
What is a mixture?
Salt dissolved in water.
What is a solution?
A mixture that looks the same throughout is called ______.
What is homogeneous?
Salt and pepper in a shaker is an example of what kind of mixture?
What is heterogeneous?
Name one way you could separate a mixture of salt and sand.
Filtration and evaporation
A mixture that has the same composition throughout and cannot be distinguished easily.
What is a homogeneous mixture or solution?
Sand mixed with iron filings.
What is a heterogeneous mixture?
A mixture in which you can see the different parts is called ______.
What is heterogeneous?
Lemonade made by dissolving sugar in water is an example of what kind of mixture?
What is a solution / homogeneous mixture?
Explain why sugar dissolves in water but sand does not.
Sugar is soluble; sand is insoluble.
A mixture where you can see the different parts and they are not evenly distributed.
What is a heterogeneous mixture?
Oil floating on water.
What is a heterogeneous mixture?
A way to separate iron filings from sand using a magnet.
What is magnetic separation?
he air you breathe is a mixture of gases; what type of mixture is it?
What is homogeneous / solution?
A student mixes oil, water, and salt. Identify all the types of mixtures present.
Oil + water = heterogeneous; salt + water = solution)
The process used to separate a solid that does not dissolve in a liquid.
What is filtration?
Sugar dissolved in tea.
What is a homogeneous mixture / solution?
A method used to separate oil from water.
What is a separation funnel / decanting?
When you separate sand from water in a science lab, what method are you using?
What is filtration?
How is a solution different from a compound?
In a solution, substances are physically combined and can be separated; in a compound, substances are chemically combined and cannot be separated physically
The process used to separate a dissolved solid from a liquid by turning the liquid into gas.
What is evaporation?
Air (oxygen, nitrogen, carbon dioxide) is an example of this type of mixture.
What is a solution / homogeneous mixture?
The type of mixture that cannot be separated by physical means.
Trick question — all mixtures can be separated physically; chemical compounds cannot.
Milk is a mixture of water, fat, and proteins. What type of mixture is it?
What is heterogeneous (emulsion)?
If you have a mixture that looks uniform but contains tiny particles suspended in it, like milk, what type of mixture is it?
Colloid, a special type of heterogeneous mixture.