Chemistry Midterm Review

Matter
anything that has mass and occupies space
Chemistry
the study of the composition of matter and the changes that matter undergoes
Organic chemistry
the study of all chemicals containing carbon
Inorganic chemistry
the study of chemicals that, in general, do not contain carbon
Biochemistry
the study of processes that take place in organisms
Analytical chemistry
the are of study that focuses on the composition of matter
Physical chemistry
the area that deals with the mechanism, the rate, and the energy transfer that occurs when matter undergoes a change
Pure chemistry
the pursuit of chemical knowledge for its own sake
Applied chemistry
research that is designed to answer a specific question
Technology
the means by which a society provides its members with those things needed and desired
Scientific method
a logical, systematic approach to the solution of a scientific problem

Make an observation
Make a hypothesis
Create an experiment to test the hypothesis
Test the theory with other experiments

Observation
information obtained through the senses; observation in science often involves a measurement
Hypothesis
proposed explanation for an observation
Experiment
a repeatable procedure that is used to test a hypothesis
Manipulated variable
independent variable; the variable that is changed during an experiment
Responding variable
dependent variable; the variable that is observed during an experiment
Theory
a well-tested explanation for a broad set of observations
Scientific law
a concise statement that summarizes the results of many observations and experiments
Mass
a measure of the amount of matter the object contains
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