Figure 2.1 The hierarchy of biological order from atom to organism

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

Figure 2.10 Electron configurations of the first 18 elements

Figure 2.3 Nitrogen deficiency

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

Figure 2.12 Covalent bonding in four molecules

Figure 2.12x Methane

Figure 2.13 Polar covalent bonds in a water molecule

Figure 2.14 Electron transfer and ionic bonding

Figure 2.15 A sodium chloride crystal

Figure 2.16 A hydrogen bond

Figure 2.18 Molecular shape and brain chemistry

Figure 2.19 A molecular mimic

Figure 2.20 Photosynthesis: a solar-powered rearrangement of matter

Pay attention to the electrons

DNA