Unit 03: Chemical calculations
3.0 Works out chemical calculations accurately.
3.1 Determines chemical formulae Using physical quantities related to atoms and molecules and works out relevant calculations using relevant constants.
Finds the oxidation number of the component atoms of a given species
Writes chemical formulae and names them using IUPAC rules.
States the common names of the chemical compounds used frequently.
States the value of Avogadro constant (L).
Carries out calculations related to moles and Avogadro constant ..
Determines the empirical formula when the percentage composition is known and the molecular formula when the empirical formula and the molar mass are known.
Reviews the parameters of composition (mass fraction, volume fraction, mole fraction, concentration)
Solves problems related to mass fraction, volume fraction and mole fraction.
Defines concentration as the composition expressed in terms of moles of the solute per volume.
Calculates and expresses the compositions in terms of mass/volume, amount/volume (concentration)
Handles glassware such as pipette, burette, beakers, measuring cylinders and four beam balance in the laboratory
3.2 Uses different kind of methods to balance the equations.
Examines the balance in a chemical equation considering the mass and charge conservation.
Balances equations by using inspection method and the redox method.
Balances simple nuclear reactions
3.3 Carries out calculations associatedWith stoichiometry and reaction equations.
Calculates quantities in chemical reactions using stoichiometry.
Explains methods of preparation of solutions and dilution.
Prepares solution of Na2 CO3.