Science / Year 8 / Science Understanding / Chemical sciences

• 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 ...

• TLF-IDM018840

Some magic tricks, such as disappearing ink or candles that won't blow out, can be explained by chemistry. In this clip, three classroom chemistry experiments demonstrate that some familiar magic tricks rely on acid-base chemical reactions, and the properties and behaviour of gases. Watch closely if you've ever wanted to ...

• TLF-IDM018842

Many natural products, such as red cabbage and turmeric, can be used as a natural source of colour to dye fibres. Watch the dyeing demonstration in this clip to see how. Discover the chemistry of natural dyes, including the bonding properties of different pigments and how acid-base reactions can alter the colour of pH-sensitive ...

• TLF-IDM018844

Graphene is perhaps the most significant new material produced in recent years. It has many potential applications in electrical devices, biomedical technology and solar energy. Graphene is a form (allotrope) of carbon with some special chemical and physical properties. Watch this clip to explore the molecular structure, ...

• TLF-IDM013655

This interactive resource takes students on a journey of discovery in the energy and mining world. Oresome world contains five games or modules: Coal, Energy, Gas, Low emissions and Mining, and within each of these there are several facilities to explore, such as the Underground mining site, Hydroelectric power station, ...

• TLF-IDM015768

Have you ever seen someone create a rocket using a soft drink bottle? In this clip, Surfing Scientist Ruben Meerman attempts to 'supersize science'. You will find out how he made a model rocket and see slow-motion footage of the rocket as it shoots up into the sky.

• TLF-IDM016389

This resource contains a materials and instruction list and brief explanation for students about the process of relighting a candle. This activity is most likely to be done as a teacher demonstration for safety and classroom management reasons, particularly at primary school level. Do this experiment to learn how a candle ...

• TLF-IDM016475

This resource contains lessons plans containing instructions and teachers' notes for an activity based on a chemical reaction that occurs when a soluble aspirin tablet dissolves and the fact that oil and water do not mix are used to create a model of a lava lamp. Students have fun while they learn about density of fluids. ...

• TLF-IDM016544

This resource contains a materials and instruction list and brief explanation for students about the process of carrying out a chemical reaction between bicarbonate of soda and vinegar.

• TLF-IDL2354

Build up to six energy chains that make electricity. Select from different energy sources and choose energy converters to match. Examine the type of energy change that happens in each converter. Arrange the converters into the correct chain so that the energy can be delivered as electricity. For example, construct a chain ...