Question

If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron ?
Can you change rust back into iron by some simple methods ?
Do you think formation of rust from iron is a chemical change ?
Give two other examples of a similar type of change.

Answer 1

Hey mate here is your answer ⬇️

⏺️ Iron is different from rust. Rust is made from the combination of iron and oxygen and water.

i.e,Fe + O2 + H2O - - - - - - - - > Rust

⏺️ No rusting of iron is a chemical change because in this reaction a new substance,rust (iron oxide) is formed.It can't be reversed by any simple method.

⏺️ Yes, it is a chemical change.

⏺️ Some examples of chemical change are:

• Combustion (burning) of wood.
• Metabolism of food in body.

Answer 2

1.Rusting

2.Iron is different from rust. Rust is made from the combination of iron and oxygen and water.

3.No

4.No, rusting of iron is a chemical change because in this reaction a new substance, rust.

5.Yes, it is a chemical change.

7. Setting of curd from milk

Burning of magnesium ribbon to form magnesium oxide

Sorry dude, I can't say 6th question I don't know

But pleazzzzzzzzzz mark me as a brain list