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Chemistry
Chapter 1
| Term | Definition |
|---|---|
| Chemistry - Long Definition | The science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular system |
| Chemistry - Short Definition | The science dealing with the composition of matter and the changes in composition that matter undergoes. |
| Scientific Method | Collect the facts or data, formulate a hypothesis, plan and do additional experiments to test the hypothesis, modify the hypothesis. |
| Hypothesis | A tentative explanation of certain facts that provides a basis for further experimentation. |
| Theory | An explanation of the general principles of certain phenomena with considerable evidence or facts to support it. |
| Scientific Laws | Simple statements of natural phenomena to which no exceptions are known under the given conditions. |
| Matter | Anything that has mass and occupies space. |
| Solid | Has a definite shape and volume, with particles clinging rigidly to one another. |
| Amorphous (Solids) | Without shape or form. |
| Liquid | Has a definite volume but not a definite shape, with particles that stick firmly but not rigidly. |
| Gas | Has indefinite volume and no fixed shape, with particles that move independently of one another. |
| Substance | A particular kind of matter with a definite, fixed composition. |
| Homogeneous | Matter is uniform in appearance and has the same properties throughout. |
| Heterogeneous | Matter consisting of two or more physically distinct phases. |
| Phase | A homogeneous part of a system separated from other parts by physical boundaries. |
| System | Simply the body of matter under consideration. |
| Mixture | A material containing two or more substances and can be either heterogeneous or homogeneous. |
| Common Solids | Aluminum, Copper, Gold, Polyethylene, Salt, Sand, Steel, Sulfur |
| Common Liquids | Alcohol, Blood, Gasoline, Honey, Mercury, Oil, Vinegar, Water |
| Common Gases | Acetylene, Air, Butane, Carbon dioxide, Chlorine, Helium, Methane, Oxygen |
| Physical Properties of Solids | State Solid, Shape Definite, Volume Definite, Particles rigidly clinging; tightly packed, Compressibility Very slight. |
| Physical Properties of Liquids | State Liquid, Shape Indefinite; Volume Definite; Particles Mobile/adhering; Compressibility Slight. |
| Physical Properties of Gases | State Gas; Shape Indefinite; Volume Indefinite; Particles Independent of each other and relatively far apart; Compressibility High. |
Created by:
iswest94
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