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chemistry

the study of the composition, structure, and properties of matter and the changes it undergoes

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model

an explanation of how phenomena occur and how data or events are related

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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

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accuracy

the closeness of measurements to the correct or accepted value of the quality measured

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volume

amount of space occupied by an object

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density

ratio of mass to volume or mass divided by volume

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conversion factors

ratio derived from the equality between two different units that can be used to convert from one unto to the other

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precision

closeness of a set of measurements of the same quantity made in the same way

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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

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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

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directly proportional

two quantities that give a constant value when one is divided by the other

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inversely proportional

two quantities that have a constant mathematical product

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theory

broad generalization that explains a body of facts or phenomena

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hypothesis

testable statement

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SI Units

measurement system accepted worldwide

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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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