AC9S7U06 Year 7 Science

AC9S7U06 – Year 7 Science: Chemical sciences

Strand

Science understanding

Substrand

Chemical sciences

This Content Descriptor from Year 7 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.

Content Descriptor

use a particle model to describe differences between pure substances and mixtures and apply understanding of properties of substances to separate mixtures

Elaborations

• using representations of particles to show the difference between samples of pure substances and mixtures, and identifying examples of each
• examining different solutions and identifying the solvent and solute
• investigating and using a range of physical separation techniques such as filtration, decantation, evaporation, crystallisation, chromatography and distillation
• exploring and comparing separation methods used in a variety of situations such as in the home, recycling industries and purifying water
• analysing how the physical properties of substances in mixtures, such as particle size, density or volatility, determine the separation technique used
• investigating separation techniques used by First Nations Australians, such as hand-picking, sieving, winnowing, yandying, filtering, cold-pressing and steam distilling

Achievement Standard This Supports

This Content Descriptor contributes to the following Achievement Standard:

Year 7 ASSCIY7

Year 7 Science Achievement Standard

By the end of Year 7 students explain how biological diversity is ordered and organised. They represent flows of matter and energy in ecosystems and predict the effects of environmental changes. They model cycles in the Earth-sun-moon system and explain the effects of these cycles on Earth phenomena. They represent and explain the effects of forces acting on objects. They use particle theory to explain the physical properties of substances and develop processes that separate mixtures. Students identify the factors that can influence development of and lead to changes in scientific knowledge. They explain how scientific responses are developed and can impact society. They explain the role of science communication in shaping viewpoints, policies and regulations. Students plan and conduct safe, reproducible investigations to test relationships and aspects of scientific models. They identify potential ethical issues and intercultural considerations required for field locations or use of secondary data. They use equipment to generate and record data with precision. They select and construct appropriate representations to organise data and information. They process data and information and analyse it to describe patterns, trends and relationships. They identify possible sources of error in methods and identify unanswered questions in conclusions and claims. They identify evidence to support their conclusions and construct arguments to support or dispute claims. They select and use language and text features appropriately for their purpose and audience when communicating their ideas and findings.