The color of a solution changes unexpectedly when stirred.
A gas is produced when two chemicals are combined.
A piece of paper is shredded into 100 tiny pieces.
An exothermic reaction occurs.
CO2 changes from a solid to a gas via sublimation.
A bicycle rusts in the rain.
The wall is painted bright red.
Sugar is dissolved in water.
A precipitate forms when two liquids are mixed together.
Water is frozen and turned into ice cubes.
