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What are the reaction conditions for nuclear fusion?
High temperature and pressure
What is formed when group 2 reacts with water?
Metal hydroxide and hydrogen
What is the trend in reactivity if group 2 with hydroxides?
Increase in reactivity
What is formed when group 2 reacts with oxygen?
Metal oxide
What is the trend in thermal stability of carbonates?
Increases down the group
What is formed when group 2 carbonates decompose?
Carbon dioxide and metal oxide
What is the trend in solubility of group 2 hydroxides?
Increase in solubility
That is the trend in solubility of group 2 carbonates?
Decreases down the group
Test for transition metals?
Sodium hydroxide
Test for carbonates?
HCl
Test for sulfates?
Barium chloride
Test for ammonia?
Red litmus paper turns blue
Test for halides?
Silver nitrate
ReCtion conditions of hydrogenation?
Nickel catalyst with heat and pressure Platinum catalyst at room temperature
What are the reaction conditions for hydration of alkemes?
Concentrated h2so4 Steam Heat and pressure
Appearance of the halogens at room temp?
Fluorine- pale yellow ga Chlorine- yellow/green gas Bromine - red/brown liquid Iodine - shiny grey solid
What is the trend in reactivity if halogens?
Decreases in reactivity down the group
Colours of halogens in water?
Chlorine - colourless Bromine- yellow/ orange Iodine - brown
Colours of halogens in hexane?
Chlorine- colourless Bromine - orange/ red Iodine- violet
How to produce HBr and HI?
Phosphoric avid
HBr and sulfuric acid?
SO2
HI with sulfuric acid?
H2S
What is the trend in thermal stability of hydrogen halides?
Decreases
Hydrogen halides with ammonia?
Ammonium halide