(chemistry only) Explain that surface area to volume ratio increases as particle size decreases.

In the subtopic Sizes of particles and their properties, this learning objective focuses on (chemistry only) Explain that surface area to volume ratio increases as particle size decreases. Within Bulk and surface properties of matter including nanoparticles (chemistry only), students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include chemistry only and surface area to volume ratio. surface area to volume ratio means a measure that describes how much surface area is available for a given volume, which increases as particle size decreases. Avoid students often think that the surface area to volume ratio remains constant as particle size decreases; instead emphasize that as the size of the particle decreases, the surface area to volume ratio actually increases, which is crucial for understanding the properties of nanoparticles. For exam answers, draw simple diagrams to visualize how the surface area to volume ratio changes as particle size decreases.