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General Chem
Chapter 2
9
Chemistry
Undergraduate 2
01/22/2014

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Term
Physical Properties
Definition
observed without making / changing the chemical makeup of a substance (physical change)
Term
Chemical Properties
Definition
describes a chemical change (Chem. Rxn.) that a substance undergoes
Term
Extensive
Definition
a property that depends on sample size. (volume, mass)
Term
Intensive
Definition
properties that are independent of sample size. (color electrical conductivity, melting point, etc.)
Term
Qualitative
Definition
changes in color and physical state.
Term
Precision
Definition
Refers to reproducibility or how close the measurements are to each other
Term
Accuracy
Definition
Refers to how close a measurement is to the real value.
Term
Systematic errors
Definition
Values that are either all higher or all lower than the actual value.
Term
Random errors
Definition
In the absence of systematic error, some values that are higher and some that are lower than the actual value.
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