Science / Year 8 / Science Understanding / Chemical sciences

Curriculum content descriptions

Chemical change involves substances reacting to form new substances (ACSSU225)

Elaborations
  • identifying the differences between chemical and physical changes
  • identifying evidence that a chemical change has taken place
  • investigating simple reactions such as combining elements to make a compound
  • recognising that the chemical properties of a substance, for example its flammability and ability to corrode, will affect its use
ScOT terms

Chemical reactions,  Molecular structure

Interactive

In digestion

Follow the passage of food through the human body. Select foods and drinks and decide how to digest them. For example, choose to chew, to add saliva to the mouth or add gastric juices to the stomach. Watch how the body reacts to changes. Find out more about digestion along the way and answer questions.

Video

Catalyst: Underground coal gasification

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 ...

Interactive

experiMENTALS: Magic rocking candle

This resource contains a materials and instruction list and brief explanation for students about the process of burning both ends of a balancing candle. This activity is most likely to be done as a teacher demonstration for safety and classroom management reasons, particularly at primary school level.

Interactive

experiMENTALS: Relightable candle

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 ...

Video

Elliot and the Surfing Scientist: Making a mini-rocket

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.

Interactive

DIY Lava Lamp

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. ...

Interactive

experiMENTALS: Bubble 07 diversion grenades

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.

Interactive

DIY pH Indicator

This resource contains lessons plans containing instructions and teachers 'notes for an activity based on the natural pH indicator present in red cabbage leaves. It can be extracted following these explicit and clear directions included for this activity. This indicator solution changes colour from purple to bright pink ...

Interactive

experiMENTALS: Energy in soft drinks

This resource contains information about how to calculate the amount of sugar and number of kilojoules in soft drink and fruit juices and brief explanation for students the effect of consuming too much sugar.

Interactive

Natural selection

This is an interactive resource in which students explore natural selection by controlling an environment and causing mutations in rabbits. Students can select vary environments, selection pressures, mutations and associated genetics, and then observe the populations change. This interactive resource is supported by tips ...

Image

Bryozoan skeletons in acidic solution

This is a colour photograph of two tubes, each containing bryozoan skeletons in acidic solution. The photograph depicts a scientific experiment investigating the effect of different pH levels on bryozoan skeletons. (Classification - Phylum: Bryozoa)

Interactive

Energy chains: make electricity

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 ...

Image

Measuring photosynthesis

This is a colour underwater photograph of marine scientist Candida Savage using a scientific instrument known as the diving-PAM. The diving-PAM is being used to measure photosynthesis in corals in Fiji. Candida Savage is wearing full diving clothing and equipment including mask, wetsuit and oxygen tanks.

Video

Four Corners: Megafires

Are we approaching the 'age of megafires'? It might sound like something out of a sci-fi movie, but some scientists believe there is cause for concern. Watch this clip to find out how bushfires as we know them are changing. Discover why.

Text

All about hydrogen

This is a fact sheet providing information on how we produce hydrogen from fossil fuels and renewable energy sources. The uses of hydrogen are briefly discussed and information is provided about hydrogen fuel cells.

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Gas-fired power

Find out how gas-fired power stations work. This fact sheet describes the generation of electricity in gas-fired power stations, which typically produce 50 per cent less carbon dioxide than conventional coal-fired power plants. Information is provided about the Daandine Power Station located west of Brisbane, which uses ...

Video

Bryozoans' role in the ecosystem

This is a colour video clip of marine scientist Associate Professor Abby Smith discussing the role bryozoans play in marine ecosystems. The clip shows Abby Smith, a teacher and researcher at the University of Otago, New Zealand, being interviewed. The clip also shows underwater photos of bryozoans, fish and corals.

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Liquefied natural gas

Find out what liquefied natural gas (LNG) is and how it is produced and used. This is an information sheet describing the characteristics of LNG as well as how LNG is processed, stored, transported and used. It includes an image of an LNG tanker.

Video

Elliot and the Surfing Scientist: Picking up ice cubes with string

Imagine trying to pick up a slippery ice cube with just a piece of string. Watch the Surfing Scientist team demonstrate how it can be done, using a surprising additive.

Video

Four Corners: Ecological effects of bushfires

Did you know that Australia is the most flammable continent on Earth? Watch this clip to discover how bushfires impact natural ecosystems, and how the increasing global threat of bushfires may affect Australia. Australian scientists explain the ecological consequences of fire and a US expert describes his concerns for the future.