Question

Which statement is a description of a chemical reaction?

• A solid is dropped into a beaker of liquid and a gas is released.
• Two liquids are mixed in a beaker and a solid form at the bottom of the beaker.
A solid is dropped into a beaker of liquid and an explosion occurs.

Answer 1

An explosion is the only chemical reaction here- it would completely change the substance whereas with the others- every substance has a solid liquid and gas form so they would still be the same substance