click below
click below
Normal Size Small Size show me how
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. |