Name the lattice structure found in the crystalline solids diamond and graphite.
Explain the way in which graphite conducts electricity.
Explain why diamond is unable to conduct electricity.
Add separate samples of phosphorus(V) chloride and silicon(IV) chloride to an excess of cold water. Write an equation for each reaction.
Describe the appearance of phosphorus(V) chloride and silicon(IV) chloride at room temperature.
Compare how the mixtures look after each reaction is complete.
Describe the meaning of amphoteric.
Identify the formula of a Period 3 oxide that shows amphoteric behaviour.
The melting points of different oxides are shown in Table 1.1. Complete Table 1.1 by identifying the strongest force of attraction in each oxide that is broken during melting. Use the abbreviations below: i.d. = instantaneous dipole-induced dipole, p.d. = permanent dipole-permanent dipole, H = hydrogen bond, C = covalent bond, I = ionic bond.
A student proposes this hypothesis: The stronger the covalent bond between atoms in non-metal oxides, the higher the melting point. Use Table 1.1 to decide whether this hypothesis is true, false, or whether there is not enough information to reach a conclusion. Explain your answer.