Explain the observations on rusting material through written or verbal forms, sketches, ICT in a creative way

Rusting of materials

Rust consists of iron oxide which is a brownish red substance formed by the reaction of iron exposed to oxygen in the presence of water or air humidity. The rust surface is unstable and brittle.

7.1

Rusting of materials

Objects in our environment are made of various materials
There are materials that can rust and there are materials that cannot rust
Factors that cause rusting

Presence of water
Presence of air

Rusting will not occur if one of these factors is absent

Rusty objects

Objects made of iron can rust.
Examples of objects that can rust are iron mailboxes, iron spoons, iron knives.
When rusting occurs, the object will turn brownish red, the rusty surface becomes rough and brittle.
At some point, the iron turns completely to rust and crumbles.

Importance of preventing objects from rusting

Objects will last longer and will not break easily
Objects will look clean and pleasant
Saves cost as objects do not need to be replaced frequently
Objects are safe to use

Ways to prevent rusting

Rusting can be avoided by preventing objects made of iron and steel from coming into contact with air and water.
The following methods are used to prevent rusting:

Painting
Applying oil or grease
Coating with anti-rust materials such as plastic

Rusting of materials

7.1

Rusting of materials

Objects in our environment are made of various materials
There are materials that can rust and there are materials that cannot rust
Factors that cause rusting

Presence of water
Presence of air

Rusting will not occur if one of these factors is absent

Rusty objects

Objects made of iron can rust.
Examples of objects that can rust are iron mailboxes, iron spoons, iron knives.
When rusting occurs, the object will turn brownish red, the rusty surface becomes rough and brittle.
At some point, the iron turns completely to rust and crumbles.

Importance of preventing objects from rusting

Objects will last longer and will not break easily
Objects will look clean and pleasant
Saves cost as objects do not need to be replaced frequently
Objects are safe to use

Ways to prevent rusting

Rusting can be avoided by preventing objects made of iron and steel from coming into contact with air and water.
The following methods are used to prevent rusting:

Painting
Applying oil or grease
Coating with anti-rust materials such as plastic

Rusting of materials

Rusting of materials

Chapter : Rusting

Topic : Explain the observations on rusting material through written or verbal forms, sketches, ICT in a creative way

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