Question

Name the following?

A fast man made chemical change.

Answer 1

• Fast changes: Changes that take fast are knows as fast changes. For example, burning of matchstick, bursting of crackers.
• Man made changes: Changes that occur due to the action of human beings are called man made changes. For example, construction of bridges and roads.
• Chemical changes: A change in which chemical composition of a substance changes and a new substance is formed is knows as chemical change. For example, curdling of milk.

Example of a fast man made chemical change:

• Bursting of cracker
• Combustion of fuel
• Burning of paper.