What do a rusting bike, a growling stomach, and a crackling campfire have in common? They are all the result of chemical reactions! Chemicals are constantly reacting in our bodies and all around us. Chemical reactions can be natural, like respiration and photosynthesis, or human-made, like the reactions in fertilizer and fireworks. This book simplifies chemical reactions with clear explanations and explosive examples. Primary sources show how scientists and engineers have studied and harnessed the power of chemical reactions. Their bold achievements will inspire readers to look for the extraordinary ways chemical reactions shape our world and future.