[11] Reactivity Series

What is the reactivity order of common metals? from most to least ( Pop Stars )

Potassium, Sodium, Lithium, Calcium, Magnesium, Aluminium, Zinc, Iron, Copper, Silver, Gold

Under what conditions does iron rust?

Iron rusts in the presence of both oxygen and water

How can the rusting of iron be prevented by barrier method

Barrier methods by painting to prevent oxygen and water from reaching the iron.

How can the rusting of iron be prevented by galvinisation

coating iron with zinc, which forms a protective layer.

how can rusting of iron be prevented by the sacrificial method

Sacrificial protection involves attaching a more reactive metal (e.g., zinc or magnesium), which corrodes instead of iron.

What is oxidation in terms of oxygen and electrons?

Oxidation is the gain of oxygen or the loss of electrons.

What is reduction in terms of oxygen and electrons?

Reduction is the loss of oxygen or the gain of electrons.

What is a redox reaction?

A redox reaction is one where oxidation and reduction occur simultaneously.

What is an oxidizing agent?

a substance that gains electrons and causes oxidation by accepting electrons from another substance.

What is a reducing agent?

a substance that loses electrons and causes reduction by donating electrons to another substance.

What is the expected result when iron reacts with dilute acids?

How do you test for hydrogen gas in these reactions?

lit splint squeaky pop