Shared Flashcard Set

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Scientific Method/Equipment/Metric System
2.1 Quiz
18
Chemistry
10th Grade
09/08/2009

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Cards

Term
observation
Definition
collecting information
Term
qualitative data
Definition
acquire information by using senses
Term
quantitative data
Definition
uses numbers: measurements and counting
Term
problem statement
Definition
a question to ask about the relationship between two different things
Term
independent variable
Definition
controlled and known by the scientist
Term
dependent variable
Definition
not known in advance or predetermined by the scientist
Term
system
Definition
a specific portion of matter in a given region of space that has been selected for study during an experiment or obeservation
Term
hypothesis
Definition
a testable statement->use "If then..."
Term
control
Definition
what we compare to; no treatment part of the experiment; nothing is done
Term
model
Definition
sometimes a physical object but also an explanation of how phenomena occur and how data or events are related
Term
energy
Definition
the base unit is joule; symbol=J
Term
mass
Definition
the base unit is gram; symbol=g
Term
length
Definition
the base unit is meter; symbol=m
Term
volume
Definition
the base units are Liter or cubic centimeter; symbols= L and cm^3
Term
temperature
Definition
base units are celcius and Kelvin; symbols= degree C or K
Term
pressure
Definition
base units are Pascal and atmosphere; symbols Pa and atm
Term
meniscus
Definition
the half-moon ring on a graduated cylinder
Term
time
Definition
base units are seconds; symbol=s
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