Calculating the number of atoms present from a given number of moles of a substance (element or molecule).

^{23}

Calculating concentration in grams per litre from a given mass of substance and volume of water.

Calculating the molarity of a solution from a given volume of solution and mass of solute.

Calculating the molarity of a solution from a given volume and number of moles of solute.

Calculating the concentration of a substance in a solution in mg L^{-1} based on a mass of solute and volume of solution.

_{solute} (mg) / V_{solution} (L)

Calculating the concentration of a substance in a solution in ppm based on given mass of solute and solution.

_{solute} (mg) / m_{solution} (kg)

Calculate the new concentration of a solution formed after adding a fixed volume of water.

_{1}V_{1}=c_{2}V_{2}

Determining the element from a given electronic configuration in the ground state (first 40 elements).

^{2} 2s^{2}...

Writing the electronic configuration for a given ion, positively or negatively charged (first 40 elements).

^{2} 2s^{2}...

Writing the electronic configuration for a given element in the ground state (first 40 elements).

^{2} 2s^{2}...

Calculating the mass of a substance from the given number of moles and the molecular formula.

_{r}

Concentration (molarity) of a solution from a given mass and formula of a compound and a volume of water.

_{r} and n=CV

Calculating the number of moles of a substance from a give mass and given molecular formula.

_{r}

Calculating the pH of a basic solution using the concentration of the solution and the dissociation constant for water.

_{w} = [OH^{-}][H_{3}O^{+}], pH=-log_{10}[H_{3}O^{+}]

Questions based on calculating the relative molecular mass for compounds with formulas given.

_{r} = A_{r1} + ... + A_{rn}

Questions based on calculating the amount of energy required to increase the temperature of a mass of water.

Questions that use the periodic table to find the symbol for an element from a given atomic number.

*Z*

Questions that use the periodic table to find the name for an element from a given atomic number.

*Z*