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What is a mixture?
Two or more substances physically combined
Is salt water a mixture or pure substance?
Mixture
What is a solute?
The substance that is dissolved
What is a solvent?
The liquid that does the dissolving
Give one example of a mixture
e.g. air, salt water, sand + water
Can mixtures be separated?
Yes
What type of mixture is the same all the way through? (Starts with H....)
Homogeneous
What type of mixture can you see different parts in? (Starts with H.....)
Heterogeneous
Is sand and water homogeneous or heterogeneous?
Heterogeneous
What is a solution?
A mixture where a solute is evenly dissolved
What does “insoluble” mean?
Cannot dissolve
Name a method to separate sand from water
Filtration / decanting
Why can mixtures be separated physically?
Substances are not chemically bonded
What is the difference between a solution and a mixture?
A solution is evenly mixed (a type of mixture)
How could you separate salt from salt water?
Evaporation
What is concentration?
Amount of solute in a solution
