Science / Year 7 / Science understanding / Chemical sciences

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Curriculum content descriptions

use particle theory to describe the arrangement of particles in a substance, including the motion of and attraction between particles, and relate this to the properties of the substance (AC9S7U05)

Elaborations
  • using and constructing models, diagrams or virtual simulations to represent changes in particle arrangement as substances change state
  • relating motion and energy of particles to distances between particles of the same substance in different states
  • comparing attractive forces in the solid, liquid and gaseous states of the same substance and relating this to relative position and movement of particles
  • examining how the changing motion and energy of particles is affected by the amount of heat energy absorbed or released
  • comparing the properties of different states of matter and explaining differences using particle theory
  • investigating properties of materials such as density, melting point and compressibility and explaining these in terms of particle arrangement
  • explaining the process of diffusion in a liquid and a gas in terms of particles
General capabilities
  • Critical and creative thinking Critical and Creative Thinking
ScOT terms

States of matter,  Properties of matter

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7 direct matches to AC9S7U05 | 13 other related resources
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States of matter

  • TLF-IDA004546

In this unit, students develop an understanding of the properties of solids, liquids and gases and how these can be explained by the particle model of matter, motion and energy.

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Ice Balloons

  • TLF-IDA003903

This activity invites students to experiment with a frozen water balloon and learn about water chemistry, phase changes, and density. The activity includes a list of tools and materials required, what to do and notice, an explanation for the underlying science of what students observe and suggestions for further activities.

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Video

Elliot and the Surfing Scientist: Shrinking and expanding metals

  • TLF-IDM015808

Explore with the Surfing Scientist team what happens when metals are heated and cooled. Find out what happens to a metal ring when it is immersed in extremely cold liquid nitrogen. What do hinges on the Sydney Harbour Bridge have to do with all this? Find out.

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Interactive

Types of matter: solids, liquids and gases

  • TLF-IDL5821

Select samples from an outdoor setting. Magnify the substances to atomic level so that the particles they consist of can be seen. Sort the substances into groups based on how the particles are arranged and how they move. Classify the substances as solids, liquids or gases. For example, classify argon as a gas and ice as ...

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

  • TLF-IDM018516

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.

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Elliot and the Surfing Scientist: Properties and behaviour of gases

  • TLF-IDM015797

All substances are made up of tiny particles. A change in temperature can change the way these particles behave. Watch as the Surfing Scientist demonstrates how a gas behaves when it is heated. Find out whether the balloon gets sucked or pushed into the bottle!

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Audio

Microwave explosions

  • TLF-IDM016216

This ABC article and podcast by Dr Karl describes how superheated water can be produced by heating in a microwave and the dangers. This program could be a useful resource when studying the particle theory of matter.

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Animal Health: the science of healthy animals

  • TLF-IDM020087

This study guide considers the science behind breeding, genetics, health and animal welfare in the cattle and sheep industries - keeping animals free of disease and parasites, improving biodiversity and protecting against feral animals. A range of articles and student activities explores how farmers and scientists are working ...

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Greener farming: protecting the environment

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This study guide examines ways Australian cattle and sheep farmers are monitoring and researching how greenhouse gas emissions are being produced by farms and steps farmers use to reduce them. This includes selective breeding programs to produce cattle and sheep whose digestive processes emit less methane, research into ...

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Audio

Water-powered engine theories need hosing down

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This ABC article by Dr Karl addresses the question: will we one day be able to power cars with water? The chemical reactions involved in the formation and decomposition of water are described. Energy transformations are explained. A very useful resource to get students thinking.

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Interactive

Aim to sustain: Get the message

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This resource is a subset of the larger resource, Aim to Sustain. As such it includes the culminating activity in which students study and make artworks that communicate an environmental message about single use and disposable plastics. The resource includes links to video, a slideshow, worksheets and links to further interactive ...

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Predicting earthquakes: are we there yet?

  • TLF-IDM016305

Ask and expert' ABC article exemplifies some creative approaches of scientists to the significant problem of predicting earthquakes. The science behind the various methods is outlined, their successes and failures and problems for possible future developments.

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The price of peak fuel

  • TLF-IDM016491

This ABC In Depth feature article discusses the projections of how long will our energy resources will last given that our need for fossil fuels is insatiable, but coal, oil, gas and uranium reserves are finite and some may even be in decline. This article is comprehensive, but it is dated at 2008.

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Trees and chairs as carbon sinks

  • TLF-IDM016250

This ABC is in Q&A format and simply explains the answer to the question 'Could we really plant our way out of climate change?'

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Why is it cooler up the mountains?

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'Ask an expert' ABC article about why is it cooler up in the mountains though it's closer to the sun and hot air rises. An excellent explanation that elicits discussion about solar radiation and heat energy and how energy is transferred and transformed.

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Interactive

NSW ecosystems on show

  • TLF-IDM021769

This resource highlights fifteen natural ecosystems found in New South Wales. Each resource has been designed for students investigating ecosystem types in NSW, providing a greater understanding of their location, function, how they are impacted by human activity and how schools and communities can work to protect them. ...

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Audio

Chemicals on the Great Barrier Reef

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This program deals with a range of human impacts on the Great Barrier Reef. Herbicides from land runoff have been traced to algae and sea grasses in river mouths and coastal zones along the Great Barrier Reef. Effects include retardation of photosynthesis and growth of corals. Other pressures on the reef include high water ...

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Elliot and the Surfing Scientist: Getting iron out of breakfast cereal

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You probably know your body needs iron and that you can get it from the foods you eat. Join the Surfing Scientist team as they attempt to extract iron from a bowl of breakfast cereal. What method do you think they will use?

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Video

Different paper plane designs

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How many different paper plane designs are there? Lots! Watch as Dylan Parker, paper plane expert, demonstrates some of his favourites. Notice the way the different shapes and features of the planes cause them to move through the air in different ways. Which one do you like the most? Why not have a go at making something similar?

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Interactive

Natural selection

  • TLF-IDM019504

This interactive simulation explores how genetic variability in a population leads to natural selection. In a series of simulations students explore which mutations are favoured by the selection agents of predators and food variety and which mutations are neutral; which traits change the survivability of an organism in ...

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