[cs_content][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]Forensic Chemistry > All Elements Have Identifiable Emission Spectra And This Can be Used to Identify Trace Elements[/cs_text][cs_text style=”color: #800000;font-family: “Oxygen”,sans-serif;”]All elements have identifiable emission spectra and this can be used to identify trace elements[/cs_text][/cs_column][/cs_row][/cs_section][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/2″ style=”padding: 0px;”][cs_text]Students learn to:
- describe the conditions under which atoms will emit light
- identify that the emission of quanta of energy as electrons move to lower energy levels may be detected by humans as a specific colour
- explain why excited atoms in the gas phase emit or absorb only certain wavelengths of light
- account for the fact that each element produces its signature line emission spectrum
- discuss the use of line emission spectra to identify the presence of elements in chemicals
[/cs_text][/cs_column][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/2″ style=”padding: 0px;”][cs_text]Students:
- identify data, choose equipment, plan, and perform a first-hand investigation using flame tests and/or spectroscope analysis as appropriate to identify and gather first-hand information to describe the emission spectrum of a range of elements including Na and Hg
- process and present information from secondary sources to analyse and identify individual elements present in a mixed emission spectrum and use available evidence to explain how such information can assist analysis of the origins of a mixture
[/cs_text][/cs_column][/cs_row][/cs_section][cs_section parallax=”false” separator_top_type=”none” separator_top_height=”50px” separator_top_angle_point=”50″ separator_bottom_type=”none” separator_bottom_height=”50px” separator_bottom_angle_point=”50″ style=”margin: 0px;padding: 45px 0px;”][cs_row inner_container=”true” marginless_columns=”false” style=”margin: 0px auto;padding: 0px;”][cs_column fade=”false” fade_animation=”in” fade_animation_offset=”45px” fade_duration=”750″ type=”1/1″ style=”padding: 0px;”][cs_text]Extract from Chemistry Stage 6 Syllabus (Amended October 2002). © 2009, Board of Studies NSW.[/cs_text][/cs_column][/cs_row][/cs_section][/cs_content]