Describe the bonding present in a metallic element such as sodium. You may support your answer with a diagram.
Describe the way solid sodium conducts electricity.
Name the kind of bonding present in sodium chloride.
Explain why sodium chloride conducts electricity in the molten state.
Name the apparatus used to measure exactly 25.0 cm$^3$ of 0.200 mol/dm$^3$ NaOH in step 1.
State the colour change shown by the methyl orange indicator in step 4, from _____ to _____.
State how the student decides that a suitable number of results have been obtained.
Calculate the concentration of $\text{H}_2\text{SO}_4$ using the following steps: • Calculate the number of moles in 25.0 cm$^3$ of 0.200 mol/dm$^3$ NaOH. • Determine the number of moles of $\text{H}_2\text{SO}_4$ that react with the NaOH. • Calculate the concentration of $\text{H}_2\text{SO}_4$.