Glossary of chemistry unit one part one vocabulary

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A systematic approach used in scientific study that typically includes observation, a hypothesis, experiments, data analysis, and a conclusion.
scientific method
Information describing color, odor, shape, or some other physical characteristic.
qualitative data
Numerical information describing how much, how little, how big, how tall, how fast, etc.
quantitative data
A tentative, tesatable statement or prediction about what has been observed.
A set of controlled obervations that test the hypothesis.
In an experiement, the variable that the experimenter plans to change.
independent variable
In an experiment, the variable whose value depends on the independent variable.
dependent variable
In an experiment, the standard that is used for comparison.
control variable
A judgement based on the information obtained.
An explanation supported by many experiments; is still subject to new experimental data, can be modified, and is considered successful if it can be used to make predictions that are true.
Describes a relationship in nature that is supported by many experiments.
scientific law
Expresses numbers as a multiple of two factors - a number between 1 and 10, and 10 raised to a power, or exponent; makes it easier to handle extremely large or small measurements.
scientific notation
A ratio of equivalent values used to express the same quantity in different units; is always equal to 1 and changes the units of a quantity without changing its value.
conversion factor
A problem-solving method that focuses on the units that are used to describe matter.
dimensional analysis (FLM)

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