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Science / Year 9 / Science Understanding / Chemical sciences

View on Australian Curriculum website Australian Curriculum, Assessment and Reporting Authority
Curriculum content descriptions

All matter is made of atoms that are composed of protons, neutrons and electrons; natural radioactivity arises from the decay of nuclei in atoms (ACSSU177)

Elaborations
  • describing and modelling the structure of atoms in terms of the nucleus, protons, neutrons and electrons
  • comparing the mass and charge of protons, neutrons and electrons
  • describing in simple terms how alpha and beta particles and gamma radiation are released from unstable atoms
ScOT terms

Atoms

Interactive

NOVA Elements - iTunes app

Explore the elements contained in the periodic table and the structure of some molecules found in everyday items. Build an element by adding the correct number of protons, neutrons and electrons, and construct a molecule by correctly placing atoms onto the structure. Symbols and formulas used to represent elements and molecules ...

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, ...

Video

Japanese tsunami's nuclear threat, 2011

Remember the earthquake and following tsunami that hit Japan in March 2011 and damaged a nuclear power plant? Find out about the damage caused, what exploded and why, and the aftermath of the disaster. What debates about nuclear power plants were reignited by the events in Japan?

Video

Nano-engineering: science fiction or reality?

Explore the amazing field of nano-engineering. Imagine being able to construct molecular-sized machines that could do specific tasks like carrying out nano-surgery on damaged cell structures in your body. Decide for yourself what might be possible and what might just be science fiction.

Video

Can photons and atoms generate laser?

Electrons around atoms can absorb and emit photons of particular colours of light – see three different atomic models explain what's going on.

Video

Meet the BFFs: four fundamental forces

We all know something about gravity, but what about the other fundamental forces of physics? Explore the properties of two familiar forces experienced in daily life, and of two less familiar ones. How do they interact, and what keeps everything from falling apart? This video was Kate Dent's entry into the 2013 Sleek Geeks ...

Video

Exploring nanotechnology

Peter Binks, CEO of Nanotechnology Victoria, answers the question 'How does nanotechnology work?' Discover what nanotechnology is and see several examples in action, such as scratch-resistant paint used in the car industry. Consider future applications of nanotechnology in areas such as sports, health care, clothing and cleaning.

Interactive

Build an atom

This is an interactive resource that allows students to build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Students can view the atoms using the electron shell model or cloud model. A small set of games give students the opportunity to review their understanding of how ...

Interactive

Atomic structure

This is an interactive resource about ion formation, isotopes, and electron orbital placement. Students construct models of atoms with properties of particular mass and charge; create models of atoms with different stabilities by adding or subtracting neutrons, protons, and electrons to a model atom; and determine that ...

Video

Forensics track drugs back to their origin

Scientists are helping police to identify the place of origin of illicit drugs that arrive on Australian shores. Watch this clip to find out how scientific analysis, computer databases and police investigation are used together to determine the source of drugs such as cocaine. Discover that international efforts are involved ...

Video

How does the retina work?

When electrons in your retina absorb photons of light they don't emit light, they cause a molecule to change shape - and that lets you see colour!

Video

How do touchscreens work?

Ever wondered how swiping your finger makes a touchscreen work? In this animation, see how invisible electric fields mess with your finger so your phone can pinpoint what you're touching.

Video

What is an optical dog nose?

What do you think an 'optical dog nose' is? Watch this video to find out how this technology can be used in the real world. Can you think of some other potential applications for this technology?

Video

When neutron stars collide

Using technologically advanced supercomputers, scientists have developed theories about the creation of black holes deep in outer space. Watch the computer simulation in this clip to see how the collision of two neutron stars produces a gamma ray burst and a new black hole. Discover that our continuing understanding of ...

Interactive

Electrons in atoms and molecules

This is an interactive resource about how the interactions of electrons with matter are central to many technologies from transistors, diodes, and smoke detectors to sophisticated imaging, lasers, and quantum computing. Students explore electron cloud models of atoms involved in covalent bonding and ionisation and relate ...

Online

Metal munchers: assessment: teacher guide

Use this resource with 'Metal munchers: assessment' (L7557). First, see a profile of that assessment object, which gives you some helpful background information. Then follow clear guidelines on the interpretation of student input related to performing tests on a range of everyday materials to discover which are metals. ...

Online

VisChem topic 7: intermolecular forces

This web page contains animations demonstrating situations in which dispersion forces, ion-dipole forces and hydrogen bonding occur. Several animations show hydrated ions, and the effect of hydration on dissolving and reaction rates is discussed in explanatory text. A document containing lesson plans and student worksheets ...

Online

VisChem topic 6: molecular structure, shape and polarity

This web page contains ten animations of molecules and compound ions as well as nine QTVR objects showing organic molecules. The animations rotate the molecules to show their structure fully. The QTVR objects can be manipulated by the user so that, as well as being rotated, different ways of modelling the molecules can be seen.

Online

VisChem topic 13: redox reactions

This web page contains a video, animations and a student worksheet investigating the redox reaction between copper metal and silver ions. The animations show important molecular-level segments from the video.

Online

VisChem topic 10: reactions of carbon compounds

This web page contains animations showing reaction mechanisms for organic substitution, addition and elimination reactions. For most reactions there are two animations, one showing molecular models, and the other showing structural formulas with movement of electrons as bonds are rearranged.