AC9S8U06 Year 8 Science

Content descriptor classify matter as elements, compounds or mixtures and compare different representations of these, including 2-dimensional and 3-dimensional models, symbols for elements and formulas for molecules and compounds

Elaborations

• • Elaboration using virtual and physical models to distinguish between elements and compounds in terms of types of atoms
• • Elaboration examining how Dmitri Mendeleev arranged the elements in the first version of the periodic table and comparing his arrangement with the current version
• • Elaboration explaining why elements are represented by symbols, compounds and molecules by formulas and mixtures by percentages
• • Elaboration using representations to show the classification of matter as elements, compounds and different types of mixtures such as solutions, suspensions and colloids
• • Elaboration examining the information conveyed by different types of representations of elements and compounds and identifying where and why these different representations are used
• • Elaboration creating a timeline or models to show how the concept of an element has changed over time from Democritus to John Dalton