Explain how the model of the atom changed following the discovery of electrons, protons and neutrons and describe how natural radioactive decay results in stable atoms

Content descriptor

Explain how the model of the atom changed following the discovery of electrons, protons and neutrons and describe how natural radioactive decay results in stable atoms.

Code

AC9S9U06

Year level

Year 9

Subject

Science

Strand

Science understanding

Sub-strand

Chemical sciences

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Learning intention

We are learning to explain how the model of the atom changed following the discovery of electrons, protons and neutrons and describe how natural radioactive decay results in stable atoms.

Cloze sentence

Explain how the model of the atom changed following the discovery of electrons, protons and neutrons and describe how natural   decay results in stable atoms.

Related Year 9 Science descriptors

• AC9S9H01Explain how scientific knowledge is validated and refined, including the role of publication and peer review
• AC9S9H02Investigate how advances in technologies enable advances in science, and how science has contributed to developments in technologies and engineering
• AC9S9H03Analyse the key factors that contribute to science knowledge and practices being adopted more broadly by society
• AC9S9H04Examine how the values and needs of society influence the focus of scientific research
• AC9S9I01Develop investigable questions, reasoned predictions and hypotheses to test relationships and develop explanatory models
• AC9S9I02Plan and conduct valid, reproducible investigations to answer questions and test hypotheses, including identifying and controlling for possible sources of error and, as appropriate, developing and following risk assessments, considering ethical issues, and addressing key considerations regarding heritage sites and artefacts on Country/Place
• AC9S9I03Select and use equipment to generate and record data with precision to obtain useful sample sizes and replicable data, using digital tools as appropriate
• AC9S9I04Select and construct appropriate representations, including tables, graphs, descriptive statistics, models and mathematical relationships, to organise and process data and information

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