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Chapter 1
Introduction to Chemistry
19
Chemistry
10th Grade
08/24/2007

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Term
chemistry
Definition
the study of matter and the changes that it undergoes
Term
matter
Definition
anything that has mass and takes up space
Term
mass
Definition
measurement that reflects the amount of matter
Term
weight
Definition
measure of matter and the effect of gravitational pull
Term
scientific method
Definition
systematic approach used in scientific study
Term
qualitative data
Definition
information that describes physical characteristics
Term
quantitative data
Definition
numerical information
Term
hypothesis
Definition
tentative explanation for what has been observed
Term
experiment
Definition
set of controlled observations that test an hypothesis
Term
independent variable
Definition
the variable you plan to change
Term
dependent variable
Definition
value that changes in response to your variable
Term
control
Definition
a standard for comparison
Term
conclusion
Definition
tentative explanation for what has been observed
Term
model
Definition
visual, verbal, and/or mathematical explanation of the data
Term
theory
Definition
explanation supported by many experiments
Term
scientific law
Definition
a relationship in nature supported by many experiments
Term
pure research
Definition
seeks to gain knowledge for the sake of knowledge itself
Term
applied research
Definition
research undertaken to solve a specific problem
Term
technology
Definition
the practical use of scientific information
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