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Vocab
Chemistry Mrs. Jones Class
14
Chemistry
7th Grade
03/05/2012

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Cards

Term

Exothermic Reaction

 

Definition
When heat is released during a phase change
Term
Endothermic Reaction
Definition
When heat is absorbed during a phase change
Term
Polar
Definition
In reference to molecules, they also have positive and negative poles on ends. And opposites are attracted and have strong bonds.
Term
Solution
Definition
Is a homogenous mixture which means it has a uniform composition throughout. A true one cannot be seperated by physical or mechanichal means.
Term
Non-Polar
Definition
Refers to the molecules that have charges but nutralize; do not have strong bonds and easily escape a solution.
Term
Mixture
Definition
A temporary solution in which the different substances can be seperated by physical or mechanical means.
Term
Solute
Definition
The substance that is dissolved to make a solution.
Term
Solvent
Definition
Is the substance that the solute is dissolved in.
Term
Solubility
Definition
Refers to the ability of a solute to dissolve in a solvent.
Term
Insoluble
Definition
Is when a solute will not dissolve in a solvent.
Term
Suspension
Definition
Is a mixture of 2 or more substances and 1 does not dissolve in the other, but stays temporarily suspended.
Term
Colloid
Definition
A solution containing tiny, undissolved particles that remain permanently suspended in a liquid.
Term
Filtration
Definition
A method for seperating a suspension by passing it through a filter.
Term
Distillation
Definition
Boiling a liquid to vaporize it, then condensing the vapor back to a liquid in a seperate vessel.
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