Eureka's Crossword

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Across
  1. 3. The bending of light when it passes from one medium to another.
  2. 5. The junction between two neurons where a nerve impulse is transmitted.
  3. 6. The ratio of the height of an image to the height of the object.
  4. 8. Molecules with the same molecular formula but different structural formulas
  5. 11. A reaction where a single compound breaks down into two or more simpler substances.
  6. 12. A chemical messenger secreted by endocrine glands that regulates various bodily functions.
  7. 13. The unit of electric current
  8. 14. The process by which green plants make their own food using sunlight, water, and carbon dioxide.
  9. 15. The functional unit of the kidney, responsible for filtering blood and producing urine.
Down
  1. 1. The reaction between an acid and a base, producing a salt and water.
  2. 2. A biological catalyst that speeds up chemical reactions in living organisms.
  3. 4. A chemical reaction where a substance loses electrons or gains oxygen.
  4. 7. The unit of power of a lens.
  5. 9. The opposition to the flow of electric current.
  6. 10. The gradual destruction of a material, usually a metal, by chemical reaction with its environment.