EXAM Revision Flashcards
Aluminum
Al, Drinks Can
Mercury Symbol
HG, thermometer
Calcium
Ca, Needed for healthy teeth n bones
Tin
Sn, Coating a food can
Properties of metals
Sonorous
Malleable
Make a high pitch noise when hit
Most metals are dense
Most metals are solid
Pg 3, set up an electrical current to prove metal conducts electricity
Pg 3, set up an electrical current to prove metal conducts electricity
Burn magnesium safely, describe what is seen
when calcium and magnesium are burned in air
and write word equations for these reactions
The grey solid burns with a bright white light producing a white ash
Equation - Magnesium + Oxygen = Magnesium Oxide
Why is sodium stored under oil
This prevents the sodium reacting with oxygen or water vapour in the air
What colour flame is produced when sodium reacts with water
Orange/Yellow
What colour flame is produced when potassium reacts with water
Lilac
Why does a piece of potassium float in water
It is less dense than `g/cm3
What gas is produced when sodium and potassium react with water
Hydrogen
What type of reaction gives out heat
Exothermic
Sodium + Water
Sodium Hydroxide
Potassium + Water
Potassium Hydroxide + Hydrogen
Calcium is kept in a closed bottle but is not stored in oil, Why?
Calcium is reactive but not as much as sodium or potassium
What happens when calcium is put into water
Granules Skink and rise continuosly
Bubbles of gas release
Heat is released
Solution becomes cloudy
