Environmental Science Vocabulary Crossword

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Across
  1. 2. The bond formed when elements share electrons.
  2. 4. Organic compounds found in all living cells.
  3. 6. A particle that contains more than one atom.
  4. 9. A compound that contains carbon-carbon and carbon-hydrogen bonds.
  5. 13. A property of water that occurs when the adhesion of water molecules to a surface is stronger than cohesion between the molecules.
  6. 16. A compound composed of carbon, hydrogen, and oxygen atoms.
  7. 22. The spontaneous release of material from the nucleus of radioactive isotopes.
  8. 24. Anything that occupies space and has mass.
  9. 27. Number The number of protons in the nucleus of a particular element.
  10. 29. A weak chemical bond that forms when hydrogen atoms that are covalently bonded to one atom are attracted to another atom on another molecule.
  11. 30. A molecule in which one side is more positive and the other side is more negative.
  12. 31. Number A measurement of the total number of protons and neutrons in an element.
Down
  1. 1. The time it takes for one-half of an original radioactive parent atom to decay.
  2. 3. A substance that contributes hydrogen ions to a solution.
  3. 5. A nucleic acid, the genetic material that contains the code for reproducing the components of the next generation, and which organisms pass on to their offspring.
  4. 7. A law of nature stating that matter cannot becreated or destroyed; it can only change form.
  5. 8. A molecule containing more than one element.
  6. 10. A reaction that occurs when atoms separate from molecules or recombine with other molecules.
  7. 11. A property of water that results from the cohesion of water molecules at the surface of a body of water and that creates a sort of skin on the water's surface.
  8. 12. An increase in the acidity of the oceans.
  9. 14. A nucleic acid that translates the code stored in DNA, which makes possible the synthesis of proteins.
  10. 15. The number that indicates the relative strength of acids and bases in a substance.
  11. 17. The substance that contributes hydroxide ions to a solution.
  12. 18. Table A chart of all chemical elements currently known, organized by their properties.
  13. 19. A critical component of living organisms made up of a long chain of nitrogen-containing organic molecules known as amino acids.
  14. 20. A substance composed of atoms that cannot be broken down into smaller, simpler components.
  15. 21. A measurement of the amount of matter an object contains.
  16. 23. A compound that does not contain the element carbon or contains carbon bound to elements other than hydrogen.
  17. 25. A chemical bond between two ions of opposite charges.
  18. 26. The smallest particle that can contain the chemical properties of an element.
  19. 28. Atoms of the same element with different numbers of neutrons.