Jaisul Naik

GCSE Science | Energy Changes

Definitions * exothermic reactions * energy is released to the surroundings * endothermic * energy is absorbed from the surroundings * activation energy * minimum energy needed to start a reaction Energy profile diagrams * x-axis * progress of reaction * y-axis

GCSE Science | Bonding and Properties

Ionic bonding * the electrostatic attraction between a metal and a non-metal ion Examples of ionic structures * sodium chloride, sodium oxide, magnesium chloride, aluminium oxide Diagram Explanation in terms of ions and movement of