Chemistry

Study of matter, its properties, and the changes it undergoes.

What is Matter?Physical and Chemical PropertiesChanges in Matter
Atomic StructureThe Periodic TableChemical Reactions and Equations
Chemistry in the KitchenChemistry in the EnvironmentMedicine and Materials
Mastering VocabularySolving Chemistry ProblemsMaking Connections
What is Matter?Physical and Chemica...Changes in MatterAtomic StructureThe Periodic TableChemical Reactions a...Chemistry in the Kit...Chemistry in the Env...Medicine and Materia...Mastering VocabularySolving Chemistry Pr...Making Connections
Practical Applications

Chemistry in the Environment

Chemistry All Around Us

Chemistry doesn't just happen in labs—it shapes our whole environment.

Chemical Cycles

  • The water cycle (evaporation, condensation, and precipitation) involves changes of state.
  • Plants use photosynthesis, a chemical reaction, to turn sunlight, water, and carbon dioxide into food.

Pollution, recycling, and even the way we clean up oil spills all involve chemistry. Knowing how chemicals interact helps us protect our planet.

Examples

  • Using filters to remove pollutants from water uses chemical reactions.

  • Composting food scraps turns them into soil through decomposition.

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Medicine and Materials