AC9S9U06

Elaborations

• AC9S9U06_E1comparing the mass and charge of protons, neutrons and electrons
• AC9S9U06_E2examining how the discovery of electrons, protons and neutrons resulted from experimental evidence and answered questions related to properties and behaviours of atoms
• AC9S9U06_E3explaining that differences in the number of neutrons in atoms of the same element results in isotopes and that naturally occurring isotopes of some elements are unstable
• AC9S9U06_E4describing in simple terms how different unstable isotopes decay such as radon-222 releasing an alpha particle, iodine-131 releasing a beta particle and cobalt-60 releasing gamma radiation to form stable atoms
• AC9S9U06_E5defining half-life, examining the timescales of decay of different elements such as carbon-14 and uranium-238 and simulating or using digital simulations to examine radioactive decay including half-life
• AC9S9U06_E6investigating how radiocarbon and other dating methods have been used to establish that First Peoples of Australia have been present on the Australian continent for more than 60,000 years
• AC9S9U06_E7identifying where applications of radioactivity are used in medicine and industry such as diagnosing and treating cancer and checking for faults in materials used in aircraft and spacecraft
• AC9S9U06_E8discussing how mass and energy are connected at all scales and energy conversion processes within atomic nuclei