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Mixtures and More!
Concentration
Vocabulary
Scientific Method
Potpourri
100
Two or more materials mixed together.
What is a mixture?
100
The amount of material dissolved in a measure of liquid.
What is concentration?
100
The property that substances have of dissolving in water.
What is solubility?
100
Observation
What is the first step in the scientific method?
100
Zinc, Nickel, Iron, Gold and more.
What is an example of an element?
200
A paper filter and screen.
What did we use to separate the materials in the first investigation?
200
When you make a solution less concentrated, usually by adding water.
What is dilute?
200
The liquid part of the solution.
What is a solvent?
200
These things can change in an experiment although there is often a control, dependent and independent parts.
What is a variable?
200
Water
What is the universal solvent?
300
When the solid dissolves and disappears.
How do we know when a mixture becomes a solution?
300
Add water, ice or heat it up.
What are three ways I can make a concentrated solution less concentrated?
300
This causes the liquid to dry up and turn to gas and disperse into the air, possibly leaving a solid material behind.
What is evaporation?
300
An educated guess based on observations and inference.
What is the hypothesis?
300
Chalk - calcium carbonate
What is the product of calcium chloride and baking soda?
400
They are alike because they both separate but the paper filter has smaller holes whereas the screen has bigger holes.
How are screens and filters alike and different?
400
It's taste, smell, color and it has a higher ratio.
What four ways can I test for concentration?
400
Any solid form of a material that can be identified by shape, color and pattern.
What is a crystal?
400
It is the control variable.
What is the variable that does not change in an experiment?
400
They are called reactants.
What is it called when two chemicals react when they are mixed?
500
White, rough, sticky, smelly, are some of these.
What are properties?
500
Neither. They are the same concentration.
If I have a solution that is 3:150 parts solute to solvent and another that is 1:50 parts solute to solvent, which is more concentrated?
500
Atom
What is the tiniest piece of an element?
500
This is based on a conclusion and after multiple trials.
What is a theory?
500
Precipitate
What is the new chemical that forms and settles out of a reaction?