What are polymers and why are they useful?
Polymers are large molecules made from lots of repeating units called monomers.
Plastic bags, waterproof coatings on clothes and wound dressings can all be made from polymers!
EM
Related Chemistry GCSE answers
All answers ▸How are elements in the modern periodic table arranged?
Hydrogen chloride (HCl) has a melting point of -114.2 °C. Sodium chloride (NaCl) has a melting point of 801 °C. Explain in terms of structure and bonding why these substances have such different melting points?
propene and steam react to form propan-2-ol. If the yield is 75% what mass of propene is required to produce 410g of propane-2-ol. [molar masses/gmol-1 propene=42, propan-2-ol =60]
balance equation : PCl5 + 4H2O → H3PO4 + HCl