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

2. 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.

3. 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

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

5. 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

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

7. 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

8. Conclusion
A judgement based on the information obtained.

9. 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