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Chap 1 Intro Chem
Question | Answer |
---|---|
Chemistry | the science concerned with the composition of matter and the changes that matter undergoes. |
Experiment | a method of testing a hypothesis |
Hypothesis | a proposed explanation for what is observed |
Macroscopic | describes the world of objects that are large enough to see with the unaided eye |
Matter | anything that has mass and takes up space |
Manipulated Variable | variable that one changes during an experiment |
Responding Variable | variable that is observed during an experiment; also called a dependent variable |
Scientific Law | describes many observations and experiments but does not explain them |
Scientific Method | a logical approach to the solution of problems |
Theory | a well tested explanation for a broad set of observations; can change over time with new observations or experiments |
Microscopic | describes an object that can be seen only under magnification |