secondary

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Across
  1. 4. - The molecule that gives plants their green color and plays a crucial role in photosynthesis.
  2. 5. - A community of living organisms interacting with their environment.
  3. 7. - The study of the effects of work, heat, and energy on a system.
  4. 8. - Atoms of the same element with different numbers of neutrons.
  5. 10. - A chemical reaction involving the loss of electrons, commonly seen in rusting.
Down
  1. 1. - The process by which plants convert sunlight into chemical energy.
  2. 2. - The movement of water molecules through a selectively permeable membrane.
  3. 3. - The skill of using language effectively and persuasively.
  4. 6. - Balanced proportions or mirror-like similarity on both sides.
  5. 9. - A substance that speeds up a chemical reaction without being consumed.