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Ch. 1 Introduction
| Question | Answer |
|---|---|
| Analytical Chemistry | Study of what and how much of a chemical is in a sample |
| Organic Chemistry | Study of the chemistry of carbon |
| Inorganic Chemistry | Study of elements other thatn carbon |
| Physical Chemistry | Study of energy, chemical reaction rates,properties of gases& physical properties of chemicals |
| Nuclear Chemistry | Study of how elements are transformed into other elements |
| Elements | A single type of atom i.e carbon, hydrogen or iodine |
| Compounds AKA Molecules | Material that contain one or more elements in a specific ration |
| Mixtures | Materials that cannot be written as a precise chemical formula |
| Heterogeneous Mixtures | Have components that can be identified. & if separated by physical methods. Ex. is Beach sand has silicon dioxide, sald, cigarette ashes etc. |
| Homogeneous Mixtures | Cannot have their iddividual components identified & separted by physical methods. Ex. Salt water which can have a lot of small amt of salt but molecules cannot be identified. |
| Physical changes | involved in changing on the form of material. Ex. Freezing water goes from liquid to soldid |
| Chemical changes | involve the formation of new molecules. Ex. yeast, digest sugar form ethanol |
| Chemical changes 2 | Change in smell, color, heat is generated, light or sound is released. |
| Chemical reactions | involves rearranging the elements. |
| Nuclear reactions | Start with a specific element but wind up with another |
Created by:
LadyE
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