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Chem Mid Term1
random questions for chemistry mid term
| Question | Answer |
|---|---|
| Boiling point of water F' | 212 |
| Boiling point of water C' | 100 |
| Boiling Point of water K | 373.15 |
| freezing point of water K' | 295 |
| Room temp K' | 273.15 |
| conversion for In. to cm | multiply in by 2.54 |
| Conversion for In. to mm | Multiply by 25.4 |
| Single, Double, Triple bonds | Single=2 shared electrons Double=4 shared electrons Triple=6 shared electrons |
| Saturated fats | single bonds will not except any H atoms |
| Unsaturated fats | multiple bonds |
| Carbon allotropes | Diamond, Graphite, Fulleren |
| Delocalization | extra stability or resonance when single and double bonds alternate. STRONGER |
| Saturated Solution | solution has absorbed as many ions as it can. No more salt can be dissolved |
| Gastric juice | acid pH closer to 2 |
| MoM | base pH 10.5 |
| Hard Ions | Ca2+ Mg2+ Fe2+ |
| Acid rain | low pH GASES= Ozone &Carbon Monoxide |
| What Elements cause colors in gemstones | beryllium, chromium, iron,lithium, manganese, titanium |
| for an Ionc Bond what kind of charge do you need? | Positive and Neg |