Complete the diagram so that it shows the ions present. Use '+' for Na$^+$ ions and '-' for Cl$^-$ ions. One ion has already been drawn for you.
How many electrons are present in a chloride ion?
Identify an element whose atoms have the same number of electrons as a sodium ion.
What is meant by electrolysis?
Name the products formed by the electrolysis of concentrated aqueous sodium chloride.
Write the ionic half-equation for the reaction at the cathode. Include state symbols.
Describe the observation made by the student in step 1.
Why did the student wash the residue in step 2?
Give the names of the two processes that took place in step 3.
Determine the amount of NaCl(aq) used. Calculate the mass of NaNO$_3$ crystals obtained.
Write a chemical equation showing the effect of heat on sodium nitrate crystals.