Demonstrate understanding of how the physical properties of materials inform their use
You need to explain how the physical properties of materials (like density, hardness, melting point) are connected to what the material is made of and how it's structured at the particle level. This means you'll be looking at things like metals, polymers, ionic compounds, and explaining why a material behaves the way it does based on its atomic or molecular structure and the forces holding it together.
You describe the use of a material and its physical properties with some reference to particle arrangement or bonding (e.g. 'polyethylene has weak forces between chains, so it's not dense and floats').
You explain in detail how the specific type of bonding or particle arrangement (e.g. delocalised electrons in metals, branched chains in polymers) directly causes the physical properties and makes the material suitable for its use.
You compare multiple materials and explain in depth how differences in bonding and structure lead to different properties, then evaluate why certain materials are better or worse for a given use based on those linked properties.
Standards typically taken alongside or after this one. Same subject, grouped by level.