Biomolecules & Polymers

Follow the chemistry of life and materials: addition polymerisation of PE, PVC and PTFE, amino acids and peptide bonds, carbohydrate tests, protein coagulation and the biuret test, and how soap micelles clean.

7 interactive Chemistry simulations on biomolecules & polymers.

Amino acids: ionic forms with pH, isoelectric point and peptide bonds Chemistry · Biomolecules & Polymers In ion mode, drag the pH slider from 0 to 14 and watch the amino acid's structure change instantly — a cation in... Ages 17–18
Carbohydrates: structure, hydrolysis and identification reactions Chemistry · Biomolecules & Polymers Choose glucose, fructose, sucrose, starch or cellulose, and the simulation draws the matching number of linked rings... Ages 17–18
Polymer structure and properties – thermoplastics, thermosets and elastomers Chemistry · Biomolecules & Polymers A chain model of a polymer: set the chain length, branching, cross-links and the forces between chains, then heat or... Ages 17–18
Protein coagulation and the biuret test Chemistry · Biomolecules & Polymers Five test tubes of egg-white solution are heated or treated with HCl, ethanol and CuSO₄, and the fifth undergoes the... Ages 17–18
Addition polymerisation: monomers joining into a polymer chain (PE, PP, PVC, PTFE, PS) Chemistry · Biomolecules & Polymers Monomer molecules with a C=C double bond (ethylene, propylene, vinyl chloride, tetrafluoroethylene, styrene) move... Ages 17–18
Condensation polymerisation – polyesters (PET), nylon-6,6 and proteins Chemistry · Biomolecules & Polymers Join monomers with two functional groups into a polymer chain: a diacid and a diol give PET (ester links), a diamine... Ages 17–18
Fat saponification and how soap micelles clean Chemistry · Biomolecules & Polymers Saponification mode: a fat molecule (a glycerol backbone plus three fatty-acid residues) is cut by OH⁻ ions at its... Ages 17–18