Grade 7 9.7 Rusting

What element rusts?

• carbon

• manganese

• iron

• potassium

What environmental element assists rusting?

• nitrogen

• oxygen

• carbon

• hydrogen

A rusting bicycle

• physical change

• chemical change

What conditions are required for rusting?

• dry cold conditions

• dry hot conditions

• hot damp conditions

Rusting is an example of

• oxidation

• reduction

What two things cause Iron to Rust ?

• Air and Oxygen

• Water and Carbon dioxide

• Oxygen and Water

• Carbon dioxide and Air

What is the chemical name given to Rust ?

• Iron dioxide

• Iron oxide

• Steel oxide

• Carbon dioxide

What prevents Rusting

• Painting , Oiling , Galvinising

• Washing with water

Raising the temperature of a chemical reaction would make the reaction __________________.

• happen slower

• stop completely

• happen faster

• proceed as normal

How do chemical reactions turn substances into new substances?

• with burning acid

• the atoms break apart and combine back together in new ways

• the molecules mix together and create new substances

• the ionic compounds mix in water to form solutions