CHEMISTRY OF LIFE & HEALTH
Play three short molecular sequences. Each is a schematic model: it highlights one idea without trying to reproduce every molecular step.
Why chemistry matters to Biology & NursingInside the Human BodyChemistry of Medicine
Soap molecules have water-friendly and oil-friendly regions. They help disperse oily material into water, and washing plus rinsing carries material away. Soap does not sterilize hands.
Play the sequence below to follow oily material from a surface into rinse water.
1/3 · Oily material on a surface
Illustrative schematic; not a scale model or treatment instruction.Some antacids contain bases that react with stomach acid. In a simplified neutralization model, hydrogen ions and hydroxide ions form water. Real products use different ingredients; not every antacid reaction produces gas.
The sequence below uses the simplified H⁺ + OH⁻ → H₂O model.
1/3 · Acid and base are separate
Illustrative schematic; not a scale model or treatment instruction.An amino-acid sequence can fold into a three-dimensional structure. Hydrogen bonding, interactions between side chains, and the surrounding environment affect folding. Some proteins also need helper proteins.
The sequence illustrates a change in shape, not a prediction of a real protein’s structure.
1/3 · A chain of amino acids
Illustrative schematic; not a scale model or treatment instruction.