rusting

Which metals rusts?

• Copper

• 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

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

What type of reactions can able to change products back to the their original form?

• Reversible reactions

• Irreversible reactions

• Combustion reactions

• Combination reactions

burning wood is ........... change

• Reversible

• Irreversible

Tags

NGSS.MS-PS1-5

A green powder is heated & a gas is given off while it turns to a black solid. This describes

• Physical Change

• Chemical Change

• Change in State

• Change in Temperature

Tags

NGSS.MS-PS1-2

Sometimes I notice rust on the metal part of the nozzle of my garden hose, how or why scientifically does this happen?

• water running through the nozzle causes it to rust

• rust or corrosion appear on metals over time

• nozzle was damaged and exposed to water

• iron in metal nozzle combined with oxygen in the air to form rust or iron oxide