AC9S8U06 Year 8 Science

This Content Descriptor from Year 8 Science provides the specific knowledge and skills students should learn. Use it to plan lessons, create learning sequences, and design assessments that align with the Australian Curriculum v9.

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

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

Related Achievement Standards