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Chemistry End-Of-Yr
| Term | Definition |
|---|---|
| Alkali Metals' strength | Very soft |
| Alkali Metals' reactivity | Very reactive with water - forms metal hydroxide |
| Alkali Metals' density | Low |
| Alkali Metals' compounds | Colourless |
| Alkali Metals' melting points | Low |
| Alkali Metal group trend | Melting point lowers as you move down the group and reactivity of metals increases as you move down the group |
| Transition Metals' melting points | High |
| Transition Metals' Reactivity | Low |
| Transition Metals' strength | Strong and hard |
| Transition Metals' density | Low |
| Transition Metals' compounds | Coloured |
| Halogens' melting points | Low |
| Halogens' strength | Brittle when solid |
| Halogens' conductivity | poor |
| Halogens' molecular structure | diatomic |
| Halogens' compounds | Coloured vapours |
| Halogens' trends | Melting points increase as you move down the group and colours become darker as you move down the group |
| Helium use | Balloons as it is less dense than air |
| Neon use | Advertising signs as it glows when electricity is passed through it |
| Argon use | Light bulbs as it stops the filament from burning away as it is unreactive |
| Krypton | Used in lasers. |
| Noble gas trends | Boiling points increase as you move down the group and density increase |
| Acid + Metal | Salt + Hydrogen |
| Acid + Metal Carbonate | Salt + Water + Carbon Dioxide |
| Acid + Alkali | Salt + Water |
| Acid + Metal Oxide | Salt + Water |
| How to make a salt using a soluble base | Titration |
| How to make a salt using an insoluble base | Add an excess of base then filter then evaporate water. |