FULL QUESTIONS AND ANSWERS 2026
◉ name the four main elements of the body
Answer: oxygen
carbon
hydrogen
nitrogen
◉ cells are made of:
Answer: macromolecules
◉ Elements join together to make.....
These then join together to form....
Answer: 1. molecules and compounds
2. macromolecules
◉ proton
Answer: 1 unit, positive charge, in the nucleus
, ◉ neutron
Answer: 1 unit, neutral charge, in the nucleus
◉ electron
Answer: 0, negative charge, electron shell
◉ when is an atom stable and unreactive?
Answer: when to outer orbit of the atom is complete or at maximum
◉ cation
Answer: giving away an electron, losing some negative charge, net
charge has changed from neutral to positive
◉ anion
Answer: gained an electron, making charge negative
◉ sharing electrons
Answer: covalent bond
◉ formed between oppositely charged ions
Answer: ionic bonds