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# Chemistry

TermDefinition
Accuracy How close a measured value is to an accepted value
Constants All other factors, except the one whose effect is being studied
Conversion Factor Ratio of equivalent values used to express the same quantity in different units
Density A ratio that compare the mass of a to its volume
Dependent Variable The variable being measured or watched, also called the outcome or the responding variable
Dimensional Analysis Technique for problem solving that employs conversion factors to get desired units, also known as the factor label method
Independent Variable The variable that is intentionally changed or manipulated by the experimenter
Graphical Analysis Technique used to determine trends, relationships, make predictions, and develop a mathematical model
Law of Conservation of Mass matter can neither be created or destroyed
Mass Amount of matter
Matter anything that has mass and takes up space
Measurement comparison between a standard and the object being measured should include all certain digits and one uncertain digit.
Metric System meter, liter and grams as units of length, capacity and weight or mass.
Percent of Error The ratio of error to the accepted value, used to determine accuracy of an experiment
Precision
Significant Figures The number of all known digits reported in measurements plus one estimated digit.
System
Uncertaintly When recording a measurement it is not possible to measure exactly. Generally uncertainty of a measurement is +/- 0.1
Variables The factors that influence the outcome of an experiment
Volume The amount of space that a substance or object occupies.
Created by: 15sweea

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