Thursday February 1, 2018 (Discussion – The Chemistry of Fire; Textbook Assignment – Pages 530 to 539)

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Thursday February 1, 2018 (Discussion – The Chemistry of Fire; Textbook Assignment – Pages 530 to 539)

The Daily CSI 1/1 Thursday, 2/1/18 What is the first thing you notice that is different between these two soil samples? The soil samples are different colors. Therefore, they probably have different mineral contents. So, they probably came from different locations.

Remediation for Quiz 10 ends tomorrow! Announcements Remediation for Quiz 10 ends tomorrow!

Summative or Formative # Assignment Summative or Formative # Date Issued Gone Missing Day Last Day Accepted QUIZ 10 S1 1/26 Tomorrow

Fire Investigation The PowerPoint slides for our unit on Fire Investigation are on the class website under today’s date (2/1).

The Chemistry of Fire

The Chemistry of Fire Oxidation is the combination of oxygen with other substances to produce new substances. B A C

The Chemistry of Fire Combustion is rapid combination of oxygen with another substance, accompanied by production of noticeable heat and light. B A C

In an exothermic reaction, heat energy is released. The Chemistry of Fire In an exothermic reaction, heat energy is released. In an endothermic reaction, heat energy is absorbed from the surroundings. B A C

The Chemistry of Fire Pyrolysis is the chemical breakdown of solid organic matter by heat. The gaseous products of pyrolysis combine with oxygen to produce a fire. B A C

The Chemistry of Fire Spontaneous combustion is fire caused by a natural heat-producing process in the presence of sufficient air and fuel. compost Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self heating (increase in temperature due to exothermic internal reactions), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, ignition. B A C

To initiate and sustain combustion: The Chemistry of Fire To initiate and sustain combustion: a fuel must be present. oxygen must be available in sufficient quantity to combine with the fuel. an ignition source must be applied to initiate the combustion, and sufficient heat must be generated to sustain the reaction. B A C

The Chemistry of Fire The three mechanisms of heat transfer are: conduction – the movement of heat through solid objects. convection – the transfer of heat energy by the movement of molecules within a liquid or gas. radiation – the transfer of heat energy from a heated surface to a cooler surface by electromagnetic radiation. B A C

Spot the Fire Hazards!

Spot the Fire Hazards!

Spot the Fire Hazards!

Spot the Fire Hazards!

Textbook Assignment – The Chemistry of Fire Please get a Forensics textbook and a blank sheet of paper. The title of your paper should be “The Chemistry of Fire.” Be sure to put your name and period on the paper! Read and study pages 530 to 539. Take notes! Define all highlighted vocabulary words that appear in this section. Please do not ignore this assignment. You can be sure that you will be using this paper as open notes on an upcoming eResearch paper and QUIZ!