A technician prepares two samples of silver. Sample P is one large piece of silver. Sample Q is the same volume of silver in the form of nanoparticles.
Which statement correctly compares how much of the silver in each sample is at the surface?
Both samples have the same amount of silver at the surface because their volumes are equal.
Sample P has more of its silver at the surface because each nanoparticle has a smaller surface area.
Sample Q has more of its silver at the surface because its surface area to volume ratio is higher.
Sample P has more of its silver at the surface because its surface area to volume ratio is higher.
104 exam-style questions on AQA GCSE Chemistry 2.4 Bulk and surface properties of matter including nanoparticles, covering 2.4.1 Sizes of particles and their properties and 2.4.2 Uses of nanoparticles. Each one has a worked solution and a mark scheme showing where the marks go.