A physicist is designing a scale model of a chlorine atom for a science museum. In the real atom, the radius of the chlorine nucleus is approximately 4.0 × 10-15 m, while the covalent radius of the chlorine atom is approximately 1.0 × 10-10 m.
In the exhibition hall, the model of the chlorine atom is a large sphere with a radius of 25 m. Which of the following objects would best represent the radius of the chlorine nucleus on this same scale?
A dust particle of radius 0.1 mm0.1\text{ mm}0.1 mm
A mustard seed of radius 1.0 mm1.0\text{ mm}1.0 mm
A glass marble of radius 1.0 cm1.0\text{ cm}1.0 cm
A tennis ball of radius 3.3 cm3.3\text{ cm}3.3 cm
41 exam-style questions on AQA GCSE Chemistry 1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, covering 1.1.1 Atoms, elements and compounds, 1.1.2 Mixtures, 1.1.3 The development of the model of the atom (common content with physics), 1.1.4 Relative electrical charges of subatomic particles, 1.1.5 Size and mass of atoms, 1.1.6 Relative atomic mass, and 1.1.7 Electronic structure. Each one has a worked solution and a mark scheme showing where the marks go.