1. Figure 2.1 The hierarchy of biological order from atom to organism

3. Figure 2.5 Two simplified models of a helium (He) atom

4. Figure 2.10 Electron configurations of the first 18 elements

5. Figure 2.3 Nitrogen deficiency

6. Unnumbered Figure (Page 38) Chemical reaction between hydrogen and oxygen

7. Figure 2.12 Covalent bonding in four molecules

8. Figure 2.12x Methane

9. Figure 2.13 Polar covalent bonds in a water molecule

10. Figure 2.14 Electron transfer and ionic bonding

11. Figure 2.15 A sodium chloride crystal

12. Figure 2.16 A hydrogen bond

13. Figure 2.18 Molecular shape and brain chemistry

14. Figure 2.19 A molecular mimic

15. Figure 2.20 Photosynthesis: a solar-powered rearrangement of matter

16. Pay attention to the electrons

17. DNA