| A | B |
|---|
| Chemistry | the scientific study of matter and the changes that it undergoes |
| Controlled experiment | compares the results of an experimental sample to a control sample |
| Experiment | controlled method of testing a hypothesis |
| Hypothesis | suggested solution or explanation of a problem |
| Model | descriptive, graphic, or three-dimensional representation of a hypothesis or theory used to help enhance understanding |
| Problem | phenomenon that needs to be investigate |
| Scientific method | method of investigation involving experimentation and observation to acquire new knowledge, solve problems, and answer questions |
| Scientific law | statement that summarizes the results of many observations and experiments |
| Theory | explanation that summarizes a hypothesis |
