Not all DNA looks like the familiar twisted ladder. Sometimes, parts of our genetic code fold into unusual shapes. One such ...

PFAS are, in many ways, remarkable molecules. Even a thin layer can repel water, oil, and dirt. They are also highly ...

It has a giant lattice structure with strong electrostatic forces of attraction. Small molecules - AQA A covalent bond is a shared pair of electrons. Covalent bonding forms molecules. Substances ...

Save guides, add subjects and pick up where you left off with your BBC account. Multiple choice questions appear throughout both exam papers, and at both foundation tier and higher tier. Multiple ...

Nuclear physicist Martin Venhart told me that if an atom were the size of a football stadium, the nucleus in the middle would be the size of a table tennis ball. Is there a similar way to describe the ...