⚙️ Reactivity of Metals and making salts

Q: What is oxidation?

A: Loss of electrons.

Q: What is reduction?

A: Gain of electrons.

Q: What is displacement?

A: More reactive metal replaces less reactive.

Q: Why do metals react?

A: They lose electrons.

Q: Metal + acid produces?

A: Salt + hydrogen.

Q: Why does magnesium fizz rapidly?

A: Highly reactive.

Q: What gas forms with water (Group 1)?

A: Hydrogen.

Q: What happens during rusting?

A: Iron reacts with oxygen and water.

Q: Why does reactivity increase down Group 1?

A: Outer electron further from nucleus.

Q: What is corrosion?

A: Gradual destruction by reaction.

Q: What forms when metal reacts with oxygen?

A: Metal oxide.

Q: Why are displacement reactions redox?

A: One metal oxidised, one reduced.

Q: Why compare rates in acid?

A: Shows relative reactivity.

Q: What observation shows reaction?

A: Fizzing.

Q: Why do more reactive metals form positive ions easily?

A: They lose electrons easily.

Q: Why are gold and platinum unreactive?

A: Very stable electron structure.

What happens when a substance is oxidised ( gains oxygen )

It always looses electrons

What happens when a substance is reduced ( looses oxygen)

It always gain electrons

Metal + water

= metal hydroxide + hydrogen

Why is carbon and hydrogen in reactivity series if they are non metals

As scientists use these elements to show how metals can be extracted form their ores

OILRIG ( terms of electrons )

Oxidation

Is

Loss

Reduction

Is

Gain

Is this correct displacement reaction

Carbon + Lead oxide = Carbon dioxide + Lead

This displacement reaction is correct because carbon is more reactive then lead so it displaces it

Acid + metal carbonate

Iron carbonate + Hydrochloric acid

= Salt + water + carbon dioxide

Iron chloride + water + carbon dioxide