Science / Year 9 / Science Understanding / Chemical sciences

Curriculum content descriptions

Chemical reactions involve rearranging atoms to form new substances; during a chemical reaction mass is not created or destroyed (ACSSU178)

Elaborations
  • identifying reactants and products in chemical reactions
  • modelling chemical reactions in terms of rearrangement of atoms
  • describing observed reactions using word equations
  • considering the role of energy in chemical reactions
  • recognising that the conservation of mass in a chemical reaction can be demonstrated by simple chemical equations
ScOT terms

Chemical reactions,  Molecular structure

Interactive

Exploring atoms: atom structure

See how scientists such as Ernest Rutherford have investigated the structure of atoms. Explore possible models. Fire charged particles at atoms and find which model best fits the results. This learning object is one in a series of six objects. Three of the objects are also packaged as a combined learning object.

Interactive

Genes

See how genes and genetic engineering work. Build models of DNA, and work out how it is copied as cells divide. Discover how the codes carried in the genes are copied and used to build proteins. See how gene splicing can be used to benefit human lives. For example, model the transfer of a human gene into bacteria, so they ...

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.

Text

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.

Text

Integrated gasification combined cycle

Find out how emissions from coal-burning can be reduced by turning the coal into syngas. This is a fact sheet describing methods of coal gasification, and how the resulting syngas can drive a combined cycle power generator. It lists the advantages of the technology, including lower emissions and increased efficiency, as ...

Interactive

Copper processing

This interactive activity allows students to explore the processes involved in the mining and processing of copper ore and the production of copper. Students initially put the processes in the correct sequence and then select each stage to animate it and access relevant information. The smelting stage includes an activity ...

Online

3D Printing: STEM careers

This is a unit of work about 3D printing, the occupations that use 3D printing and the future of this technology. The resource includes: An introduction with teacher notes, student tasks, embedded videos and links to additional resources. Specific topics explored include: what is 3D printing; applications of 3D printing; ...

Image

Iodine molecule

This is a colour image of a model of a molecule of iodine, I₂. In this model, two iodine atoms are represented by deep red spheres held together by a grey rod that represents a covalent bond.

Image

Bromine monofluoride molecule

This is a colour image of a model of a molecule of bromine monofluoride, BrF. In this model, atoms are represented by coloured spheres held together by grey rods, representing covalent bonds. The bromine monofluoride molecule contains one bromine atom (the brown sphere) and one fluorine atom (the blue-grey sphere).

Image

Hydrogen molecule

This is a colour image of a model of a molecule of hydrogen, H₂. In this model, two hydrogen atoms are represented by grey-white spheres held together by a grey rod that represents a covalent bond.

Image

Graptolite fossils - item 1

This is a colour photograph of graptolites fossilised in rock. These are specimens of 'Pendeograptus fruticosus'. The figures visible on the rock are cataloguing numbers.

Text

Climate science analysis from The Conversation

This is a collection of articles about climate science. It includes articles about modelling, explanations about heat trends, predictions about sea level rise, and why the science about climate change is clear. The articles are written in plain language and are authored by experts from universities in Australia and around ...

Image

Graptolite fossils - item 5

This is a colour photograph of a graptolite fossilised in rock. This species is 'Clonograptus persistens'.

Image

Ethanol molecule

This is a colour image of a model of a molecule of ethanol, CH₃CH₂OH. In this model, atoms are represented by coloured spheres held together by grey rods that represent covalent bonds. The molecule contains two carbon atoms (the black spheres), one oxygen atom (the red sphere) and six hydrogen atoms (the grey-white spheres).

Online

Secondary science: visual representations

These seven learning activities, which focus on 'visual representations' using a variety of tools (software) and devices (hardware), illustrate the ways in which content, pedagogy and technology can be successfully and effectively integrated in order to promote learning. In the activities, teachers assist students to understand ...

Online

Secondary science: models and simulations

These seven learning activities, which focus on 'models and simulations' using a variety of tools (software) and devices (hardware), illustrate the ways in which content, pedagogy and technology can be successfully and effectively integrated in order to promote learning. In the activities, teachers assist students to interpret, ...

Image

Southern gastric brooding frog

This is a colour photograph of a preserved southern gastric brooding frog ('Rheobatrachus silus'). It is a museum specimen viewed from the front.

Image

Zygomaturus fossil skeleton

This is a colour photograph of a 'Zygomaturus tasmanicus' fossil skeleton. The skeleton is a museum specimen and has been braced with metal rods. It is displayed in a standing posture.

Image

Gastropod fossil

This is a colour photograph of a fossil of a gastropod 'Tenagodus occlusus', showing the spiralled shell.

Interactive

Oresome world

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, ...