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Glossary of Chemistry measurement

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What is DENSITY?
the ratio of mass to volume or mass divided by volume
Define WEIGHT
A measure of the gravitational pull on matter
What is a DERIVED UNIT?
a unit that is a combination of SI base units
What is a THEORY?
a broad generalization that explains a body of facts or phenomena.
What is an INVERSE RELATIONSHIP OR INVERSE PROPORTION?
two quantities which have a constant mathematical product
VOLUME is what?
the amount of space occupied by an object.
What does PRECISION describe?
the closeness of a set of measurements of the same quantity made in the same way
What is a PERCENT ERROR?
A value calculated by subtracting the experimental value from the accepted value,dividing the difference by the accepted value and then multiplying by 100
What does DIRECT PROPORTION or DIRECT RELATIONSHIP describe?
two quantities that give a constant value when one is divided by the other
What is a HYPOTHESIS?
A testable statement
ACCURACY describes what?
the closeness of measurement to the correct or accepted value of the quantity measured

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