Rusting Science Year 5

Objects made of __________ will rust.

• Wood

• Plastic

• Iron

• Cotton

Which of the following objects will rust?

• Copper ring

• Gold necklace

• Rubber band

• Iron nail

Puan Lisa finds that the spoons in her kitchen have rusted. What is the material used to make the spoons?

• Gold

• Iron

• Silver

• Copper

What are the characteristics of rusty objects?

• Becomes stronger

• Reddish-brown colour

• Rough surface

• Expands

• Brittle

What causes an object made of iron to rust?

• Presence of oil and anhydrous calcium chloride

• Lacking of water and air

• The presence of water and air

• Rust removal solution

What are the ways to prevent rusting?

• Keep it away from direct sunlight

• Applying oil or grease

• Painting

• Coating with a layer of rustproof material

• Coating with a layer of iron

What is the best way to prevent food cans from rusting?

• Painting

• Applying grease

• Coating with plastic

• Plating with tin

How to prevent a rusted motorcycle chain from becoming worse?

• Apply grease on the motorcycle chain

• Always wash the motorcycle chain

• Cover motorcycle chain with plastic

• Do not use the motorcycle

What is the health risk if you get stabbed by a rusty object?

• Malaria

• Tetanus

• Dengue

• Hand-foot-mouth Disease

Is food in dented/rusted can safe to eat?

• Yes

• No