Explain what is produced when iron wool is burnt?
Iron Oxide
Is burning of iron wool a chemical reaction ? Explain
Yes, as a completely new substance iron oxide was formed.
How are the properties of iron oxide different from the properties of iron wool.
Colour & odour different, heavier, not a conductor of electricity and did not attract magnets.
Is the number of atoms before the reaction the same as the number of atoms after the reaction?
Yes
Explain physical and chemical change with examples.
Physical and Chemical Change
What does Hydrogen peroxide break into?Also mention properties of hydrogen peroxide.
oxygen and water.
What is a catalyst? Name the most common Catalyst.
..Mangenese di-oxide
Explain the reaction in the glow stick with the reactants and products.
hydrogen peroxide & Luminol are the reactants.
Give an example of a slow reaction?
1) Iron Nails in Water.2) Formation of Fossil Fuels
Give an example of a fast reaction.
1) Vinegar and Baking Soda 2) Burning of Fossil Fuels
Combining Magnesium and oxygen gives us.........................
Magnesium oxide
Combining water and carbon di-oxide is.................
Carbonic Acid.
