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Ch 4 Vocab- Chem
Term | Definition |
---|---|
Hypothesis | testable statement |
Theory | broad generalization that explains a body of facts or phenomena |
Derived Unit | Combinations of SI base units |
Density | ratio of mass to volume, or mass/volume |
Accuracy | the closeness of a set of measurements to the correct or accepted value of the quantity measured |
Direct Proportion | if dividing one by the other gives a constant value |
Precision | the closeness of a set of measurements of the same quantity in the same way |
scientific method | principles and procedures for the systematic pursuit of knowledge involving the recognition and formulation of a problem, the collection of data through observation and experiment, and the formulation and testing of hypotheses. |
model | explanation if how phenomena occur and how data or events are related |
SI | Le Systeme International d'Unites |
Quantity | something that has magnitude, size, or amount |
Inverse Proportion | constant product |
Percent Error | calculated by subtracting the experimental value from the accepted value, dividing the difference by the accepted value and then mutipling by 100 |
system | specific portion of matter in a given region of space |
conversion factor | which represents the relationship between two different units. |
weight | measure of gravitational pull on matter |
volume | amount of space occupied by an object |
significant figures | consists of all digits known with certainty plus one final digit |
scientific notation | mathematical expression used to represent a decimal number between 1 and 10 multiplied by ten |