Chemistry Vocabulary Chapter 1
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Created by:
AlisonBromley on September 27, 2011
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16 terms
Terms | Definitions |
|---|---|
 chemistry | the study of the composition, structure, and properties of matter and the changes it undergoes |
| model | an explanation of how phenomena occur and how data or events are related |
| significant figure | a value calculated by subtracting the experimental value from the adopted value, diving the difference by the accepted value, and then multiplying y 100 |
| accuracy | the closeness of measurements to the correct or accepted value of the quality measured |
| volume | amount of space occupied by an object |
| density | ratio of mass to volume or mass divided by volume |
| conversion factors | ratio derived from the equality between two different units that can be used to convert from one unto to the other |
| precision | closeness of a set of measurements of the same quantity made in the same way |
| scientific notation | numbers written in the form M x 10n where the factor M is the number grater than or equal to 1 but less than 10 and n is a whole number |
| percent error | value calculated by subtracting the experimental value from the accepted value, diving the difference by the accepted value, and then multiplying by 100 |
| directly proportional | two quantities that give a constant value when one is divided by the other |
| inversely proportional | two quantities that have a constant mathematical product |
| theory | broad generalization that explains a body of facts or phenomena |
| hypothesis | testable statement |
| SI Units | measurement system accepted worldwide |
| scientific method | logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data |
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