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Rust Formation and Corrosion Quiz

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Questions and Answers

What is rust?

A green oxide formed by the reaction of iron and oxygen in the presence of water or air moisture

A blue oxide formed by the reaction of iron and oxygen in the presence of water or air moisture

A black oxide formed by the reaction of iron and oxygen in the presence of water or air moisture

An iron oxide formed by the reaction of iron and oxygen in the presence of water or air moisture (correct)

What is the common term for corrosion of elemental iron and its alloys such as steel?

Rusting (correct)

Corroding

Oxidizing

Degrading

What does rust consist of?

Hydrous iron(II) oxides and iron(III) oxide-hydroxide

Anhydrous iron(II) oxides and iron(III) oxide-hydroxide

Anhydrous iron(III) oxides and iron(III) oxide-hydroxide

Hydrous iron(III) oxides and iron(III) oxide-hydroxide (correct)

What does surface rust look like?

<p>Commonly flaky and friable</p> Signup and view all the answers

What provides passivational protection to the underlying iron, unlike rust?

<p>Formation of patina on copper surfaces</p> Signup and view all the answers

Study Notes

Rust

Rust is a common term for corrosion of elemental iron and its alloys, such as steel.
Rust consists of iron oxide, an flaky, reddish-brown substance.

Characteristics of Rust

Surface rust appears as a flaky, reddish-brown substance.

Protection against Corrosion

Unlike rust, a passive layer provides protection to the underlying iron, preventing corrosion.

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Description

Test your knowledge about rust and its formation with this quiz. Explore the chemical reactions involved and the conditions that lead to the corrosion of iron. Learn about the properties and composition of rust in this informative quiz.