Write the chemical reaction of baking soda with lemon.

Define a chemical reaction.

Write the chemical name of backing soda. Write any one of it uses.

Explain the combustion zone in the extraction of iron from its ore ? Write the chemical reaction occurring in that zone .

Write the chemical reactions to show the amphoteric nature of water.

Write the chemical reactions involved the extraction of gold by cyanide process. Also give the role of zinc in the extraction.

What is the chemical reaction of lighting a match?

What is thermo chemical reactions?

Write the effects of chemical reactions.