Science / Year 9 / Science Understanding / Chemical sciences

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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

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Year level 9-10
Resource type
Learning area Science
Tablet friendly (Interactive resource)

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 resource

Radioactive decay

Watch radioactive decay happen at the sub-atomic level. Make predictions and analyse graphs resulting from the decay of an array of radioactive atoms in order to determine the half-life of the element. For example, find the half-life of the radioactive element used in carbon dating, carbon-14. This learning object is a ...

Interactive resource

Exploring atoms: atom builder

Explore subatomic particles and how they combine to form atoms. Compare different ways of modelling atoms. Use nuclear symbols to represent different isotopes. Build atoms by combining protons, neutrons and electrons. This learning object is one in a series of six objects. Three of the objects are also packaged as a combined ...

Interactive resource

Exploring atoms

Explore subatomic particles and how they combine to form atoms and ions. Compare different ways of modelling atoms. Use nuclear symbols to represent different isotopes. Build atoms and ions by combining protons, neutrons and electrons. This learning object is a combination of three objects in the same series.

Interactive resource

Exploring atoms: atom bingo

Explore subatomic particles and how they combine to form atoms and ions. Compare different ways of modelling atoms. Use nuclear symbols to represent different isotopes. Build atoms by combining protons, neutrons and electrons. This learning object is one in a series of six objects. Three of the objects are also packaged ...

Interactive resource

Radioactive decay: half life

Watch radioactive decay happen at the sub-atomic level. Make predictions and analyse graphs resulting from the decay of an array of radioactive atoms in order to determine the half-life of the element. For example, find the half-life of the radioactive element used in carbon dating, carbon-14. This learning object is one ...

Text

Chemical Reactions: student guide

This is a student guide that takes an in-depth look at chemical reactions with individual chapters on the structure of atoms, chemical changes and formula, radioactivity and nuclear energy, energy changes, and reactions involving acids and bases. Each part or chapter of this resource contains information, images and diagrams, ...

Interactive resource

Exploring atoms: ion builder

Explore subatomic particles and how they combine to form atoms. Compare different ways of modelling atoms. Use nuclear symbols to represent different isotopes. Build ions by combining protons, neutrons and electrons. This learning object is one in a series of six objects. Three of the objects are also packaged as a combined ...

Interactive resource

Radioactive decay: radiocarbon dating

Use radiocarbon dating to find and compare the ages of ancient remains. Convert organic samples to gas and use a Geiger counter to measure radioactivity. Use calculations and radioactive decay graphs to estimate the age of the samples. For example, check whether a bone from 'Sthenurus', a giant kangaroo, could be younger ...

Interactive Resource

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, ...

Teacher resource

Chemical reactions: teacher guide

This is a teacher guide containing material to support the planning and implementing of lessons for a unit on chemical reactions. It covers topics such as atomic structure, elements and the Periodic Table, chemical reaction rates and energy, conservation of mass, radioactivity, combustion, and reactions involving acids ...

Moving Image

The radioactivity of everyday things

Everyday products that contain radioactive elements such as radium may also be radioactive. Elements like uranium and radium become radioactive when the nucleus of the atoms undergoes radioactive decay. In this clip, a scientist challenges people to identify which products, such as brazil nuts and a smoke alarm, are radioactive. ...

Interactive resource

Exploring atoms: atom and ion bingo

Explore subatomic particles and how they combine to form atoms and ions. Compare different ways of modelling atoms. Use nuclear symbols to represent different isotopes. Build atoms and ions by combining protons, neutrons and electrons. This learning object is one in a series of six objects. Three of the objects are also ...

Interactive resource

Exploring atoms: assisted atom builder

Explore subatomic particles and how they combine to form atoms. Compare different ways of modelling atoms. Use nuclear symbols to represent different isotopes. Build atoms by combining protons and electrons. (Neutrons are automatically allocated.) This learning object is one in a series of six objects. Three of the objects ...

Interactive resource

Where there's smoke

Explore how a smoke detector works in a home. Make smoke in a kitchen to trigger the beeping sound of a smoke alarm. Look at a circuit diagram and magnified view to see how an isotope interacts with ionised gases within a circuit gap. This learning object is one in a series of three learning objects.

Moving Image

Enter the weird world of atoms

All matter is made of atoms, but what do we really know about them? Their structure, relative size, and abundance is demonstrated in this clip using sand grains and motorbike riders on a beach. A scientist also explains the strange behaviour of atoms, which underpins the powerful scientific theory called quantum mechanics.

Moving Image

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?

Interactive Resource

Laptop wrap: Modelling atoms

A page with a focus on exploring different models of the atom. Includes tasks to present models of the atom.

Audio

Green glow of radiation

Coming into contact with a large dose of radiation is known to be hazardous. But will it make you light up like a car dashboard at night? Some anecdotes that will engage the students to learn about radioactivity while dispelling a few myths.

Interactive Resource

Sites2See: Nuclear jeopardy

Resources to help understand and debate the issues around continuing and future use of nuclear energy after the nuclear accidents in 2011 at Fukushima Daiichi and Fukushima Daini and after the Tohoku earthquake and tsunami. Includes links to sites and information for both sides of the nuclear energy debate, including information ...