reactivity series Flashcards
What is the reactivity series?
A list that ranks metals based on their reactivity with water and acids
The reactivity series helps predict how metals will react in various chemical processes.
Which metal reacts violently with water?
Potassium
Potassium is one of the most reactive metals in the reactivity series.
Fill in the blank: Only metals above ______ in the reactivity series will react with dilute acids.
hydrogen
What is the general equation for a metal reacting with an acid?
metal + acid ⟶ salt + hydrogen
What happens when magnesium reacts with hydrochloric acid?
Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)
This reaction produces magnesium chloride and hydrogen gas.
What is a metal displacement reaction?
A reaction where a more reactive metal displaces a less reactive metal from its compound.
What is the outcome when zinc reacts with copper(II) oxide?
Zn + CuO → ZnO + Cu
Zinc reduces copper(II) oxide to copper while being oxidized to zinc oxide.
True or False: Iron rusts in the absence of water.
False
What are two methods to prevent rusting of iron?
- Barrier methods (e.g., paint, oil)
- Sacrificial protection (e.g., using zinc)
What is galvanizing?
Coating iron with zinc to prevent rusting.
Fill in the blank: Oxidation is defined as the ______ of electrons.
loss
What is the mnemonic for remembering the reactivity series?
‘Please send lions, cats, monkeys and cute zebras into hot countries signed Gordon’
What is the role of copper(II) oxide in the reaction with zinc?
It is the oxidizing agent providing oxygen.
What happens to the color of copper(II) sulfate solution when magnesium displaces copper?
The blue color fades as magnesium sulfate forms.
What is the composition of rust?
A soft solid substance formed from the oxidation of iron.
Fill in the blank: In a redox reaction, oxidation and reduction occur ______.
simultaneously
What is the chemical equation for iron reacting with sulfuric acid?
Fe (s) + H2SO4 (aq) → FeSO4 (aq) + H2 (g)
What does a displacement reaction demonstrate about metal reactivity?
The more reactive metal displaces the less reactive metal from its compound.
What is the result of rusting on iron structures?
Weakening and flaking of the iron.
What type of reaction is involved when zinc reacts with hydrochloric acid?
A single displacement reaction.
What is the oxidation state change for V3+ to V4+?
Oxidation.
What is the purpose of adding calcium chloride in rusting investigations?
To absorb moisture and prevent rusting.
What is a spectator ion?
An ion that does not participate in the chemical reaction and remains unchanged.
