Competiton Against The Elements Flashcards
What does magnesium, zinc, iron, lead and copper do when reacting with acid?
Magnesium: reacts v. Significantly.
Zinc: steady reaction with steam of gas
Iron: slow, with hydrogen gas in bubbles if at all
Lead: v. Slow. Acid must be concentrated for any visible reaction.
Copper: no reaction at all
What is the thermit reaction?
Aluminium + iron oxide > aluminium oxide + iron
Iron is oxidised.
This is a redox reaction
The reactive aluminium displaces less reactive iron from iron oxide in v. Hot reaction called thermite reaction. Method: used for welding/fixing railway tracks.m
In order form most reactive to least what Rae the metals in the reactivity series?
Potassium~ polly Peter Sodium ~ sits. Says Lithium ~ like. Lulu Calcium ~ cows. Can Magnesium ~ molly Make Aluminium ~ acts. A Carbon ~ cool. Cat Zinc ~ Zoe. Zoe Iron ~ irons. Is Tin ~ trousers. Tremendously Lead ~ like. Lovely Hydrogen ~ hats. Harry Copper ~ can. Can Silver ~ sits. So Gold ~ gilly. Go Platinum ~ polly. Platinum
What does calcium, lithium, sodium and potassium do when reacting with cold water?
Calcium: produces hydrogen bubbles steadily.
Lithium: reacts well producing large bubbles.
Sodium: vigorously reacts producing enough hydrogen to sustain a flame when ignited.
Potassium: violently reacts igniting its own flame.
What happens with metals with water?
Sodium. Hydroxide is the metal
Potassium
Lithium + water > hydroxide+ hydrogen
Calcium
Hydrogen- test with lit splint
What happened with metals with acid?
Metals with acid > salt + hydrogen
Hydrochloric acid + calcium > calcium nitrate + hydrogen
Tests for acids and metals
Co2- limewater goes cloudy with co2
H2- lit splint goes pop
O2- glowing splint relights
CI2- Damon litres paper in bleach
