Introduction to Chemistry

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Presentation transcript:

Introduction to Chemistry Mr. Stripling Pre-AP Chemistry Room 402

The Basics Matter – makes up all things that take up space Chemistry – the study of matter and the changes it undergoes Substance – matter that has a definite and uniform composition. Also known as a chemical.

Mass – a measurement that reflects the amount of matter Weight – a measure of matter and the effect of Earth’s gravitation pull on that matter

Scientific Methods A systematic approach used in scientific study. It is an organized process used to do research.

Observations Qualitative data – describes color, odor, shape, or any physical characteristic Quantitative data – tells how much how little, how big, how tall, or how fast. Numerical information

Hypothesis A tentative, testable statement or prediction about what has been observed.

Experiment A set of controlled observations that test the hypothesis. Independent variable – what we intend to change. Dependent variable – changes in response to a change in the independent variable Control – a standard for comparison

Conclusion A judgement based on the information obtained.

Theory & Scientific Law Theory – an explanation of a natural phenomenon based on many observations over time. Scientific law – a relationship in nature that is supported by many experiments

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