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Vocabulary
Acids and Bases
solutes and solvents
Solutions
pH scale
100
What does polar mean?
That the molecule is positively charged on one end and negatively charged on the other. Example: Water
100
What is the substance on the pH scale when it produces hydrogen ions?
It is an acid
100
What speeds up the dissolving of a solid solute in water?
stir the solution
100
In a solution, what is the substance that is being dissolved?
solute
100
Cabbage changed color in the presence of acids and bases. What was the cabbage called in the experiment?
indicator
200
The amount of solute that can be dissolved in a specific amount of solvent at a given temperature is its ______.
solubility
200
What is a substance on the pH scale when it produces hydroxide ions?
it is a base
200
How do you increase the boiling point of a solution?
by adding more solute to the solvent
200
The ocean is an example of what type of solution?
liquid
200
What measures an acid or a base?
the pH scale - potential of hydrogen
300
What is H30?
hydronium ions
300
A bitter taste and slippery feel identifies an acid or a base?
base
300
When dissolving a gas in a liquid, how can it dissolve faster?
by cooling the liquid
300
When a solution contains all the solute it can hold at a given temperature, what can be said about it?
It is saturated
300
pH measures the _____________ of hydronium ions in a solution.
concentration
400
A _____ is a compound formed in solutions from the negative ion of an acid and the positive ion of a base.
SALT
400
How can a weak base be identified?
it only partly ionizes in a solution; therefore it measures as a weak base.
400
Where does the dissolving of a solid in a liquid occur?
at the surface
400
When a solution contains a large abount of solute in the solvent, how can it be described?
It is concentrated
400
What 2 ways can the pH of a solution be determined?
pH paper or an indicator (like our red cabbage juice)
500
What is water often called?
the "universal solvent"
500
What measure is neutral on the pH scale?
7
500
What term is used to describe a solution when it cannot hold or dissolve any more solute?
supersaturated
500
What speeds up the rate of a solid in a solution?
increasing the surface area of that solid
500
What is the pH of a solution that is neither acidic or basic?
neutral