Across
- 2. First law of thermodynamics emphasizes energy ___
- 5. Matter with a fixed and definite composition
- 6. Tiny units that make up all matter
- 7. Reaction that breaks down molecules for energy
- 9. Reaction that builds muscle, proteins, and nucleic acids
- 13. Bitter-tasting substance with pH above 7
- 15. Earth's water-based environments (rivers, oceans, lakes)
- 16. Structured body of knowledge using testing and observation
- 22. Energy needed to start a chemical reaction
- 23. Flowing electrons generate this energy type
- 25. Process where soluble substances are washed out from soil
- 26. Scale measuring acidity or alkalinity (0–14)
- 28. Electromagnetic energy visible to the human eye
- 29. Stored energy depending on object’s position
- 30. Field studying relationships between organisms and environment
Down
- 1. Energy released when glucose breaks down in cells
- 3. Organic compound carrying genetic instructions
- 4. Physicist who inspired the “joule” unit
- 8. Sugars and starches belong to this organic group
- 10. Testable explanation in scientific inquiry
- 11. Process in plants converting sunlight into glucose
- 12. Force that links atoms in molecules
- 14. Fundamental particle in chemical substances
- 17. Cycle interrupted by deforestation; involves breathable gas
- 18. Natural cycle moving carbon through Earth's systems
- 19. Law promoting solid waste segregation in PH
- 20. Zone of Earth where all life thrives
- 21. Reaction occurring in cells for life processes
- 24. Heat-related form of energy from molecular motion
- 27. Work is done when force moves an object over a ___