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Separating Mixtures
Reaching Saturation
Chemical Reactions
Concentration
Miscellaneous
100
A mixture formed when one or more substances dissolves in another.
What is a solution?
100
No matter how much you shake the bottle or how long you wait, the salt won't dissolve in water. The solvent will not dissolve any more solute.
What is a saturated solution?
100
Two chemicals that react when they are mixed are called this.
What are reactants?
100
When Kool-aid tastes sweet and looks dark, it is considered __________________.
What is concentrated?
100
The best way to separate a solution.
What is evaporation?
200
Two or more substances together.
What is a mixture?
200
This can change how much solute dissolves in a solvent.
What is temperature?
200
The process in which two or more substances combine to make one or more new substances which have different properties than the original ones.
What is a chemical reaction?
200
When Kool-aid is too sweet I can dilute it by doing this.
What adding more water?
200
The substances in mixtures keep their original _______________.
What is are properties?
300
A kind of solution where the solvent cannot dissolve any more solute.
What is a saturated solution?
300
A solid substance added to a solvent that will dissolve to make a solution.
What is a solute?
300
The solid formed as a result of a chemical reaction is called this.
What is a precipitate?
300
The amount of material dissolved in a given amount of liquid is a ____________.
What is concentration?
300
In a solution, the substance that makes up the larger part is called the _______________.
What is the solvent?
400
A screen, a filter, or evaporation are this.
What are three ways to separate a mixture?
400
A substance in which a solute dissolves to form a solution.
What is a solvent?
400
You know this has occurred when the starting substances, called reactants, change into new substances, called products. The new substances can be solid, liquid, or gas. There also might be heat or light. Baking a cake is a good example of this.
What is a chemical reaction?
400
To determine which solution is more highly concentrated you must weigh ____________ ____________.
What are equal volumes?
400
If the substances in a mixture blend completely, we call this a _______________.
What is solution?
500
These are made by evaporating a solution and whose shape can be used to identify the solid material in the solution.
What are crystals?
500
It takes about 40 ml of citric acid in 50 ml of water before reaching saturation. It takes only about 10 ml of salt in 50 ml of water before reaching saturation. Citric acid is more __________ than salt.
What is soluble?
500
List three things you can observe that let you know a chemical reaction is occurring.
What is formation of gas, formation of solid, change of color, and change of temperature?
500
Solution A is made of 500 ml of water and 10 ml of salt. Solution B is made of 200 ml of water and 10 ml of salt. Which is more concentrated?
What is solution B?
500
Susan made a dry mixture of pebbles, flour, and Epsom Salts. She added 50 ml of water to the mixture. She wants to separate the materials in this order: first pebbles, second flour, and last Epsom salts. What order is the best way to do this?
What is screening, filtering, then evaporating?