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Krys Chem 1
Exam 1
| Question | Answer |
|---|---|
| Metalloids | elements that touch bold line except Al |
| Heterogeneous | Components not mixed uniformly; can see individual components |
| Density | amount of substance per unit volume; ususally g/mL |
| Density Equations | D= M/V, M= DxV, or V= M/D |
| Physical Change | doesn't change chemical nature |
| Rows (periods) | runs left to right on periodic table |
| suspension | opaque (cant see thru them) particles are large enough to be seen |
| Sublimation | solid straight to gas |
| Alkaline earth metals | Column 2 |
| Endothermic | takes in heat (remember En) |
| states of matter | solid, liquid, gas |
| Deposition | gas straight to solid |
| Melting | solid to liquid |
| Boiling Point | 212 F and 100 C |
| Exothermic | gives off heat (remember ex) |
| Room Temp | 68 F and 20 C |
| Freezing Point | 32 F and 0 C |
| Chemical Change | does change its chemical nature |
| Evaporation | liquid to gas |
| Nonmetals | to the right of bold line |
| Transition Metals | Columns 3-10 (smaller area on table) |
| Columns (Groups) | Run up and down |
| Condensation | gas to liquid |
| Freezing | liquid to solid |
| Alkali metalse | Column 1 |
| Kinetic Energy | energy results from motion |
| Halogens | column 15 |
| Scientific Method | observation, hypothesis, experimental test, conclusion, report results |
| Giga (G) | 1,000,000,000 |
| Kilo (k) | 1,000 |
| Centi (c) | 0.01 |
| Milli (m) | 0.001 |
| Micro | 0.000001 |
| element | substance that can't be broken down into simplier substances |
| F and C degrees line up | -40 |
| Compound | substance that can be broken down into simplier substances by chemical means |
| mixture | substance that can be broken down by physical means |
| homogeneous | all components are mixed uniformly; looks like 1 substance |
| Noble gases | last column |
| unit for mass | grams (g) |
| unit for length | meters (m) |
| unit for volume | Liters (L) |
| Unit for time | seconds (s) |
| Solution | Clear (doesn't mean colorless) |
| Potential Energy | stored energy |
| metals | to the left of bold line |