Something is wet because the molecular structure allows the molecules to flow past each other. This slippery feeling is what we call 'wet'. A gas acts the s ame way, except the molecules are too far apart to be wet. The molecules in a solid are packed too tightly for the molecules to slide. The color objects appear depends upon their chemical makeup.
Objects absorb some colors and reflect others.
Some things, such as the ultraviolet rays in sun, can break the chemical bonds. Some objects fade faster simply because their chemical bonds break down faster. What does p. The 'p' is an operator symbol, which stands for 'negative logarithm'. The 'H' stands for 'Hydrogen'.