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Alessio_IS3_Chapter 1

Chemistry The study of matter and its interactions and changes.
Matter Anything that takes up space and has mass.
Independent Variable The variable in an experiment that the scientist manipulates.
Dependent variable The variable in an experiment that is observed or measured.
Constant All variables in an experiment that are not being tested, therefore they do not change.
Prediction Simply a statement of what you believe will happen.
Hypothesis A statement that attempts to explain why a behavior happens or how natural phenomena relate to one another.
Precision Measurements that are consistent with each other. You get a similar result over and over.
Accuracy Measurements that match theoretical values or accepted results from previous investigations.
Scientific Theory Explains how or why a natural phenomenon occurs.
Scientific Law Describes what happens in nature. Usually expressed as a mathematical formula.
Qualitative Observations that do not include numbers. Notes about color, texture, heat flow, formation of solid, liquid, or gas etc.
Quantitative Data that includes numbers. Actual measurements.
SI Units Descriptive units of measurements used in the International System of measurements.
Created by: ralessio