Science / Year 8 / Science Understanding / Chemical sciences

• TLF-IDM015797

All substances are made up of tiny particles. A change in temperature can change the way these particles behave. Watch as the Surfing Scientist demonstrates how a gas behaves when it is heated. Find out whether the balloon gets sucked or pushed into the bottle!

• TLF-IDM015602

Can you imagine being able to crush a can without hitting or squashing it? Watch as Ruben the Surfing Scientist shows you how this can be done. Listen to Ruben explain the science behind the imploding can and find out what invisible force is involved.

• TLF-IDL5821

Select samples from an outdoor setting. Magnify the substances to atomic level so that the particles they consist of can be seen. Sort the substances into groups based on how the particles are arranged and how they move. Classify the substances as solids, liquids or gases. For example, classify argon as a gas and ice as ...

• TLF-IDM020087

This study guide considers the science behind breeding, genetics, health and animal welfare in the cattle and sheep industries - keeping animals free of disease and parasites, improving biodiversity and protecting against feral animals. A range of articles and student activities explores how farmers and scientists are working ...

• TLF-IDM019560

This interactive simulation explores the conservation of energy in a skater moving on a curved ramp. In a series of simulations students explore the transformation of energy between kinetic and potential energy; how changing the mass, friction, or gravity affects the skater's energy; students can predict position or estimate ...

• TLF-IDR3048

This is a black-and-white photograph of the exterior of an exhibition home made of fibrolite (fibro-cement) that was constructed by James Hardie and Co Ltd (now known as James Hardie Industries). The street outside the home is crowded with people, some of whom have come to view the fibrolite home. The photograph measures ...

• TLF-IDM015531

Discover how nanotechnology is contributing to the creation of new, improved batteries that may soon be used in all our mobile phones and portable music devices - even in cars and trams. Catalyst's Tanya Ha looks at how traditional batteries produce electricity and how their efficiency may be increased by tiny devices known ...

• TLF-IDM021086

Watch this clip and learn why Pluto was taken off the official list of planets. Dr Karl Kruszelnicki explains the three criteria that must be met before planets can be called planets. What are they?

• TLF-IDR6367

This is a gold nugget known as the 'Bunyip nugget'. It weighs 50 ounces (1.55 kg). It was found in the early 1970s by a farmer while ploughing near Bridgewater to the west of Bendigo in Victoria, and was purchased by the National Museum of Victoria (now Museum Victoria) in 1978 for $40,000.

• TLF-IDM016033

How are scientists using technology to get energy out of coal without having to dig it up? Find out how underground coal gasification (UCG) burns and converts the coal to gas underground. Visit UCG trial sites in Queensland and hear how UCG avoids some of the environmental effects of traditional coal mining, but may have ...