Practise covalent bonding through definitions, dot-and-cross diagrams, molecular boiling points and giant covalent structure-property links.
The atoms in methanol are held together by covalent bonds.
State what is meant by the term covalent bond.
Draw a dot-and-cross diagram to show the bonding in a molecule of methanol.
Show only the outer electrons of each atom.
This question is about the covalent compounds hydrogen chloride and silicon dioxide.
Describe the forces of attraction in a covalent bond.
Hydrogen chloride has the formula HCl
Draw a dot-and-cross diagram to show the bonding in a hydrogen chloride molecule.
Show only the outer shell electrons in each atom.
Explain why the boiling point of hydrogen chloride is low.
The diagram shows part of the structure of silicon dioxide.
Silicon dioxide has the same structure as diamond.
Silicon dioxide is very hard and has a very high melting point.
Explain these properties.
Refer to the structure and bonding of silicon dioxide in your answer.
A student uses this apparatus to investigate the decomposition of hydrogen peroxide solution.
This is the equation for the reaction.
Complete the dot-and-cross diagram for a molecule of hydrogen peroxide.
Show outer electrons only.
