HSC Chemistry 27 October 2023
IQ3: How are chemicals in solutions measured?
Students:
●conduct practical investigations to determine the concentrations of solutions and investigate the different ways in which concentrations are measured (ACSCH046, ACSCH063)
● manipulate variables and solve problems to calculate concentration, mass or volume using:
– 𝑐=𝑛𝑉 (molarity formula) (ACSCH063)
– dilutions (number of moles before dilution = number of moles of sample after dilution)
● conduct an investigation to make a standard solution and perform a dilution
The Checkout, while not a Science show, took an interesting look at how serving sizes (and therefore nutrient concentrations) vary betweeen products.