The periodic table written questions
Write H1 Chemistry explanations of periodic patterns and element properties, using marking guidance to check your reasoning.
Learning goals
- Recognise how electronic configurations change across a period and down a group
- Explain trends in atomic radius, ionic radius, first ionisation energy and electronegativity across a period using shielding and nuclear charge
- Explain trends in atomic radius, ionic radius, first ionisation energy and electronegativity down a group using electron shells, shielding and nuclear charge
- Explain how melting point and electrical conductivity vary across a period using the structure and bonding of the elements
- Explain the trend in volatility of the Group 17 elements using instantaneous dipole–induced dipole attractions
- Explain how the highest oxidation number varies in the Period 3 oxides and chlorides
- Explain how bonding in the Period 3 oxides and chlorides varies using electronegativity
- Describe how the Period 3 oxides react with water
- Explain the acid–base behaviour of the Period 3 oxides and hydroxides, including amphoteric behaviour
- Explain how the Period 3 chlorides react with water
- Suggest the structure and bonding in Period 3 oxides and chlorides from their properties
- Explain the reactivity of the Group 1 elements as reducing agents by how easily they lose electrons
- Explain the reactivity of the Group 17 elements as oxidising agents by how easily they gain electrons
- Explain the trend in thermal stability of the Group 17 hydrides using bond energies
- Predict the properties of an element in a given group from periodic trends
- Deduce the nature, likely position and identity of an unknown element from its properties
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