Across
- 2. energy directly involved in moving matter (p.24)
- 4. energy in action (p.24)
- 8. substances that conduct an electrical current in solution (p.39)
- 10. oddly shaped checkerboard which provides a more complete listing of the known elements (p.25)
- 12. subatomic particles that bear a negative charge (p.25)
- 13. bond formed when electron sharing produces molecules in which the shared electrons occupy a single orbital common to both atoms (p.32)
- 19. chemical bond between atoms formed by the transfer of one or more electrons from one atom to the other (p.32)
- 20. the building blocks of elements (p.25)
- 21. the equivalent to the atomic weight or molecular weight (sum of atomic weights) weighed out in grams of any element or compound (p.29)
- 24. occurs whenever chemical bonds are formed, rearranged, or broken (p.35)
- 26. also known as neutral fats, are commonly known as fats when solid or oils when liquid (p.45)
- 28. chainlike molecules made of many similar or repeating units (monomers) (p.42)
- 29. substances composed of two or more components physically intermixed (p.29)
- 32. a measure of hydrogen ion concentration of a solution (p.40)
- 33. a substance that takes up hydrogen ions (H+) in detectable amounts (p.39)
- 34. the capacity to do work (p.24)
- 36. structural variations of an element that have the same number of protons and electrons but different number of neutrons (p.27)
- 38. subatomic particles that bear a positive charge (p.25)
- 39. homogeneous mixtures (meaning that the mixture has exactly the same composition or makeup throughout) of components that may be gases, liquids or solids (p. 29)
- 40. one mole of a substance, approximately 6.02×10^23 (p.30)
- 41. globular proteins that act as biological catalysts (p.51)
- 43. the building blocks of proteins (p.47)
- 46. heterogeneous mixtures, meaning that their composition is dissimilar in different areas of the mixture (p.30)
- 49. a long, double-stranded polymer—a double chain of nucleotides that provides basic instructions for building every protein in the body (pp.53&54)
- 50. two or more atoms held together by chemical bonds (p.28)
Down
- 1. a substance that releases hydrogen ions (H+) in detectable amounts (p.39)
- 3. reaction that releases energy (p.37)
- 5. the primary energy-transferring molecule in cells (p.55)
- 6. a group of molecules that includes sugars and starches (p.43)
- 7. one- or two-letter chemical shorthand used to designate each element (p.25)
- 9. form of energy stored in the bonds of chemical substances (p.24)
- 10. modified triglycerides (diglycerides with a phosphorus-containing group and two fatty acid chains) (p.47)
- 11. the process of atomic decay in which atoms of heavier isotopes of elements which are unstable, decompose simultaneously into more stable forms (p. 28)
- 14. study of the chemical composition and reactions of living matter (p. 38)
- 15. an average of the relative weights (mass numbers) of all the isotopes of an element (p.28)
- 16. anything that occupies space and has mass (p.24)
- 17. number of protons in the nucleus of an atom (p.27)
- 18. stored energy (p.24)
- 22. an energy relationship between the electrons of the reacting atoms (p.31)
- 23. an ionic compound containing cations other than H+ and anions other than the hydroxyl ion (OH-) (p.39)
- 25. subatomic particles that are neutral (p.25)
- 27. heterogeneous mixtures with large, often visible solutes that tend to settle out (p.30)
- 30. flat molecules made of four interlocking hydrocarbon rings (p.47)
- 31. unique substances that cannot be broken down into simpler substances by ordinary chemical methods (p.25)
- 35. a single strand of nucleotides located chiefly outside the nucleus and can be considered a “molecular slave” of DNA (p.54)
- 37. reaction that absorbs energy (p.37)
- 42. sum of the masses of protons and neutrons of an atom (p.27)
- 44. formed when two or more different kinds of atoms bind (p.28)
- 45. isotopes that exhibit radioactivity (p.28)
- 47. regions around the nucleus in which a given electron or electron pair is likely to be found (p.26)
- 48. central part of an atom containing protons and neutrons tightly bound together (p.25)