Use relative atomic mass A(r) to compare atoms. Calculate the relative molecular mass (Mr) and percentage composition. Apply concept of relative atomic mass A(r) to percentage composition. Calculate ratios of masses of elements in compounds. Explain why fertilizers are used and calculate the percentage of nitrogen. Apply concept of conservation of mass to equations. Use the terms reactant, product, yield Use ratios to calculate masses of reactants and products. Calculate of empirical formula
Content/contenido
To use mathematical concepts of ratio, proportion and percentage. Foundation for the mole concept in year 5
Summative task / evaluación final
End a topic test. Formative assessment Classwork and home work based on calculations.
