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Test #5; Chapter 6
Mixtures&Solutions and Acids&Bases
23
Chemistry
8th Grade
12/10/2009

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Term
Acids
Definition
Substances that produces H+ ions in water, tastes sour, reacts with metals and carbonates.
Term
Bases
Definition
Substances that produces OH- ions in water, tastes bitter, feel slippery.
Term
Indicators
Definition
A compound that changes color when in contact with an acid or a base.
Term
Cabbage Juice
Definition
Turns red for acids, blue for bases.
Term
Phenolphthalein
Definition
Turns pink for bases.
Term
Litmus Paper
Definition
Acids turn blue litmus red. Bases turn red litmus blue.
Term
Golden Rod
Definition
Turns red for bases.
Term
Universal Indicator
Definition
Turns reddish for acids, bluish for bases.
Term
pH Scale
Definition
Show concentration of hydrogen ions.
0-7 are acids, 7 is neutral, 7-14 is basic.
How strong acid or base is.
Term
Neutralization
Definition
An acid reacts with a base to produce a salt and water. No longer harmful.
Term
Mixtures
Definition
Two or more substances that are not bonded together chemically and can be separated by physical means.
Term
Solution
Definition
An evenly mixed mixture (the same throughout).
Term
Solute
Definition
What is being dissolved into the solvent.
Term
Solvent
Definition
The solute is dissolved into this,
Term
Settle/Strain
Definition
Let large particles in suspension sink to bottom and pick them or strain them out.
Term
Filter
Definition
Particles in suspension cannot pass through a filter.
Term
Distillation
Definition
Boil away solvent to leave dissolved solute behind.
Term
Unsaturated
Definition
When more and solute can still be dissolved.
Term
Saturated
Definition
When solution is so concentrated (strong) that no more solute can be dissolved. Reached maximum amount.
Term
Supersaturated
Definition
When more solute can be dissolved in solvent by changing temperature or pressure.
Term
Solubility
Definition
How much solute can be dissolved in a solvent.
Term
Colloids
Definition
A mixture where particles do not dissolve or settle (in a between a solution and suspension).
Term
Suspensions
Definition
A not evenly mixed mixture where particles settle to the bottom.
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