The Particulate Nature of Matter structured questions · SEC G2 Science Chemistry component

Learning objectives

• describe the solid, liquid and gaseous states of matter and explain their interconversion in terms of the kinetic particle theory and of the energy changes involved.
• state the relative charges and approximate relative masses of a proton, a neutron and an electron
• describe, with the aid of diagrams, the structure of an atom as consisting of protons and neutrons (nucleons) in the nucleus and electrons arranged in shells (energy levels) (knowledge of s, p, d and f classification is not required; a copy of the Periodic Table will be available in the examination)
• define proton (atomic) number and nucleon (mass) number
• interpret and use nuclide notations such as ¹²₆C
• define the term isotopes
• deduce the numbers of protons, neutrons and electrons in atoms and ions given proton and nucleon numbers.