Experiential learning in Chemistry

Some signs that a chemical change occurred include temperature increase, spontaneous change in color after mixing compounds, a marked odor after the reaction begins, formation of a precipitate in the solution and release of bubbles. While telling the difference between a physical change and a chemical change can seem tricky at first, knowing these signs that indicate a chemical reaction has taken place can make this important scientific concept much more straightforward. Students of grade 7 were performing experiments for these chemical change to get a proper understanding about the topic.