1.1 Chemistry and Chemicals

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Chemistry

The study of the properties of matter and how matter changes

Conclusion

a judgement based on the information obtained

The Scientific Method

a process that scientists use to make observations in nature, gather data, and explain natural phenomena.

experiment

a set of controlled observations that test the hypothesis

observations

ask questions about what you observe

I will try drinking coffee only in the morning

experiment

which of the following contains chemicals? sunlight, fruit, milk, breakfast cereal

fruit, milk, breakfast cereal

If I stop drinking coffee in the afternoon, I will be able to sleep at night

hypothesis

Drinking coffee at night keeps me awake

observation

Hypothesis

possible explanation of the observation, an educated guess

Chemicals

substances that have the same composition and properties wherever found - toothpaste


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