Science / Year 10 / Science Understanding / Chemical sciences

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Links to resources to explore fundamental questions about light and matter and the application of the physics of light and matter to the past, the future and to space. Includes a quick quiz, links to additional DEC NSW physics resources and to the International Science School at the University of Sydney.

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Many scientists believe we are already experiencing megafires and that they will continue to increase in the future. In this clip you will hear from Australian scientists at the forefront of fire research. Discover what they have to say about the causes, projections, and consequences of an increased megafire threat.

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What does 'horsepower' really mean? And how do engines work? Join Luke and Abhi from MIT to find out! As Abhi explains, engines produce power by forcing a mixture of fuel and air into a tight space and then burning it. Piston engines and turbine engines do this in similar, yet different ways. After watching this video, ...

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The use of embryonic stem cells for medical research is a hotly debated ethical issue, with much of the discussion focusing on when human life begins. Listen to the views both of scientists and of some people from several faith traditions. In a major stem-cell breakthrough, scientists have discovered a new type of stem ...

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Want to know if an egg is rotten, why onions bring on tears and what makes green vegetables turn brown after cooking? Watch this clip to discover the chemistry behind these and other everyday problems. Find out about the chemical reactions, compounds and elements involved, and learn some simple chemistry-inspired solutions.

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Explore how chemical pollutants affect the Antarctic food web. A scientist shows that baleen whales are consuming Antarctic krill contaminated by accumulated residues of persistent organic pollutants (POPs) from pesticides and industrial chemicals. Find out why these pollutants are concentrated at the Earth's polar regions.

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Tutankhamen was an Egyptian pharaoh who ascended to the throne in 1333 BC, at the age or nine or ten. His fame in modern times is due to the discovery of his virtually intact tomb in 1922. Since then, many questions have been asked about his life and ancestry. Listen to this audio clip to find out how genetic technology ...

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Is carbon capture and storage (CCS) the solution to climate change? CCS technology captures carbon dioxide from the flue gases of coal burning power plants and takes it to long-term storage. The coal industry has high hopes that pumping the liquefied gas into underground reservoirs, or geo-sequestration, will provide safe ...

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Discover how seals are helping scientists study Antarctica, polar regions, oceans and climate change. Scientists use Weddell and southern elephant seals to gather data and monitor the way currents move heat around the world's oceans.

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Geneticists have long thought that 98 per cent of human DNA was 'junk' (or 'non-coding') DNA. However, recent scientific research suggests that there is much more to this DNA than first thought. Watch this clip to discover more.