Name________________________ Date_______________________ Period _________
Chapter 2 Vocab: Chemistry
Please give the definition of each word in complete sentence form.
Hypothesis:
Scientific Method:
Model:
System:
Theory:
Conversion Factor:
Density:
Derived Unit:
Quantity:
SI:
Volume:
Weight:
Accuracy:
Directly Proportional:
Indirectly Proportional:
Percent Error:
Precision:
Scientific Notation:
Significant Figures:
Hypothesis- A testable Statement
Scientific Method- A logical approach to solving problems by observing and collecting
data, formulating hypotheses, and formulating theories that are supported by data
Model- An explanation of how phenomena occur and how data or events are related
System- A specific portion of matter in a given region of space that has been selected for
study during an experiment or observation
Theory- A broad generalization that explains a body of facts or phenomena
Conversion Factor- A ratio derived from the equality between two different units that can
be used to convert from one unit to another
Density- The ratio of mass to volume or mass divided by volume
Derived Unit- A unit that is a combination of SI base units
Quantity- Something that has a magnitude, size or amount
SI- The measurement system accepted worldwide
Volume- The amount of space occupied by an object
Weight- A measure of gravitational pull on matter
Accuracy- The closeness of measurements to the correct or accepted value of the quantity
measured
Directly Proportional- Two quantities that give a constant value when one is divided by
the other
Indirectly Proportional-As one variable increases the other will decrease
Percent Error- A value calculated by subtracting the experimental value from the
accepted value, dividing it the difference by the accepted value, and then multiplying by
100
Precision
Scientific Notation
Significant Figures