EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Rust forms because iron and oxygen are highly ____ elements
A
flammable
B
malleable
C
reactive
D
conductive
Explanation: 

Detailed explanation-1: -Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.

Detailed explanation-2: -Rust is the common name for a very common compound, iron oxide. Iron oxide, the chemical Fe2O3, is common because iron combines very readily with oxygen–so readily, in fact, that pure iron is only rarely found in nature.

Detailed explanation-3: -Rust results from a reaction called oxidation, in which iron reacts with water and oxygen to form hydrated iron (III) oxide. Essentially, the metal is naturally returning to its unrefined state.

Detailed explanation-4: -The exposure of iron (or an alloy of iron) to oxygen in the presence of moisture leads to the formation of rust. This reaction is not instantaneous, it generally proceeds over a considerably large time frame. The oxygen atoms bond with iron atoms, resulting in the formation of iron oxides.

Detailed explanation-5: -Iron rusts when it combines with oxygen in the air. Iron rusting is an example of a chemical reaction. In a chemical reaction, substances change into entirely different substances. For example, the iron in the bike and the oxygen in the air have changed into rust.

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