Is burning of iron wool a chemical reaction ? Explain
Yes, as a completely new substance iron oxide was formed.
Explain what is produced when iron wool is burnt?
Iron Oxide
Explain the reaction in the glow stick with the reactants and products.
hydrogen peroxide & Luminol are the reactants.
Combining water and carbon di-oxide is.................
Carbonic Acid.
Give an example of a slow reaction?
1) Iron Nails in Water.2) Formation of Fossil Fuels
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.
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
Explain physical and chemical change with examples.
Physical and Chemical Change
What is a catalyst? Name the most common Catalyst.
..Mangenese di-oxide
What does Hydrogen peroxide break into?Also mention properties of hydrogen peroxide.
oxygen and water.
Is the number of atoms before the reaction the same as the number of atoms after the reaction?
Yes