2d - Reactivity Series Flashcards
What is the loss of electrons called?
Oxidation
What is the gain of electrons called?
Reduction
What are the 3 things needed for combustion?
Heat, oxygen + fuel
What are metal oxides?
bases / alkalis
What are non metal oxides
Acids
What does the thermal decomposition of metal carbonates produce?
Co2 + a metal oxide
Acid + metal —> ……..?
Acid + metal —> salt + hydrogen
Metal + water —> ……..?
Metal + water —> metal hydroxide + hydrogen
List the reactivity series from most reactive to least
Potassium sodium lithium calcium, magnesium aluminium zinc iron copper silver gold
Iron + oxygen + water —> ……..?
Iron + oxygen + water —> hydrated iron (III) oxide (rust)
List methods which prevent rusting
- Barrier methods
- sacrificial coating
- galvanising
Describe potassium’s reaction with water
Reacts violently
Describe sodium’s reaction with water
Reacts quickly
Describe calcium’s reaction with water
Reacts less strongly
Describe potassium’s reaction with acid
Reacts violently
Describe sodiums reaction with acid
Reacts violently
Describe calcium’s reaction with acid
Reacts vigorously
Describe magnesium’s reaction with acid
Reacts vigorously
Describe zinc’s reaction with acid
Reacts less strongly
Describe iron’s reaction with acid
Reacts less strongly
Only metals above …….. in the reactivity series will react with dilute acids
Hydrogen
Give 2 examples of Metal displacement reactions
- metal + metal oxide
- metal +aqueous solution of a metal compound
Describe the reaction between magnesium + dilute hydrochloric acid
- dissolves quickly
- gets hot
- gas goes pop with a lighted splint
Describe the reaction between iron + dilute hydrochloric/sulfuric acid
Very slow bubbling
Describe the reaction between zinc + dilute hydrochloric acid
- bubbles
- metal slowly dissolve
Describe the reaction between zinc + dilute sulfuric acid
- colourless solution formed
- gas slowly given off
Describe the reaction between magnesium + dilute sulfuric acid
- rapid bubbling
- metal dissolves
- splint goes pop