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Jul 3, 2017 · Look up definitions of chemistry words in this comprehensive A to Z chemistry dictionary. The glossary is organized alphabetically.
Many define science as an intellectual pursuit that involves the observation of natural occurrences and events, to discover the hidden facts and to formulate laws, theories and principles based on those facts. A Glossary of Scientific Terms and Definitions. A to Z index. A | B | C | D | E | F | G | H | I | J | K | L | M.
Our glossary of science definitions covers a huge body of knowledge explaining topics ranging from quantum physics to the microbiome.
- Anne Marie Helmenstine, Ph.D.
- Central Limit Theorem: States that with a large enough sample, the sample mean will be normally distributed. A normally distributed sample mean is necessary to apply the t-test, so if you are planning to perform a statistical analysis of experimental data, it's important to have a sufficiently large sample.
- Conclusion: Determination of whether the hypothesis should be accepted or rejected.
- Control Group: Test subjects randomly assigned to not receive the experimental treatment.
- Control Variable: Any variable that does not change during an experiment. Also known as a constant variable.
- Anomaly: An anomaly is an observation that differs from expectation or from accepted scientific views. Anomalies lead scientists to revise a hypothesis or theory.
- Central Limit Theorem: The central limit theorem states that with a sufficiently large sample, the sample mean will be normally distributed. A normally distributed sample mean is necessary to apply the t test, so if you are planning to perform a statistical analysis of experimental data, it’s important to have a big sample.
- Conclusion: The conclusion is your determination of whether the hypothesis should be accepted or rejected. It is one of the steps of the scientific method.
- Control Group: The control group is the set of test subjects randomly assigned to not receive the experimental treatment. In other words, the independent variable is held constant for this group.
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This glossary of chemistry terms is a list of terms and definitions relevant to chemistry, including chemical laws, diagrams and formulae, laboratory tools, glassware, and equipment.
