chemistry

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Across
  1. 2. - Atom or molecule with a net electric charge.
  2. 4. - State of matter with no fixed shape or volume.
  3. 7. - Measure of thermal energy in a substance.
  4. 8. - Lipid that stores energy and provides insulation.
  5. 9. - Sweet carbohydrate used as an energy source.
  6. 14. - Substance with a pH greater than 7.
  7. 15. - Reaction involving the loss of electrons.
  8. 17. - Force applied per unit area in gases or liquids.
  9. 20. - Element essential for DNA and ATP (P).
  10. 25. - State of matter that flows and takes the shape of its container.
  11. 28. - Gas that makes up about 78% of Earth's atmosphere (N).
  12. 29. - Important electrolyte for cellular function (K).
  13. 30. - Gaseous state of a substance that is typically a liquid or solid.
  14. 32. - Reaction involving the gain of electrons.
  15. 34. - Combination of two or more substances without a chemical reaction.
  16. 36. - Lightest element, found in water (H).
  17. 39. - Fundamental element in organic chemistry (C).
  18. 40. - Mineral important for bones and teeth (Ca).
Down
  1. 1. - Smallest unit of a chemical compound.
  2. 3. - Essential liquid for life (H₂O).
  3. 5. - Physical form of matter: solid, liquid, or gas.
  4. 6. - Large biomolecule made of amino acids.
  5. 10. - Main source of energy for living organisms.
  6. 11. - Prefix indicating one billionth; used in nanotechnology.
  7. 12. - Substance formed from two or more elements chemically bonded.
  8. 13. - Disinfectant used in water treatment (Cl).
  9. 16. - Process where substances transform into new products.
  10. 18. - Biological catalyst that speeds up chemical reactions.
  11. 19. - Homogeneous mixture of solute and solvent.
  12. 21. - Element known for its distinct smell in rotten eggs (S).
  13. 22. - State of matter with a fixed shape and volume.
  14. 23. - Alkali metal essential for nerve function (Na).
  15. 24. - Inert gas used in balloons (He).
  16. 26. Dioxide - Gas produced during respiration (CO₂).
  17. 27. - Compound often used in fertilizers (NH₃).
  18. 31. - Substance with a pH less than 7.
  19. 33. - Gas needed for respiration (O₂).
  20. 35. - Mixture where small particles are dispersed but not dissolved.
  21. 37. - Organic compound commonly used in beverages (e.g., ethanol).
  22. 38. - Any substance with a defined composition.