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Chemistry Vocabulary Chapter 1

STUDY
PLAY
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