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�r r� r rr rr err r■� �r �r rr rr �r �r err �■r err �r rr <br /> 1� <br /> CHEMISTR <br /> + Chemical changes <br /> _ ? <br /> _. <br /> A. <br /> *Yr Flammability <br /> > Flammable limits - Concentration range where gas will <br /> ignite in air <br /> ■ Lower Explosive Limit (LEL) <br /> ■ Upper Explosive Limit (UEL) <br /> Sol, <br /> ),- Flash point - Lowest temperature liquid produces vapors :z:: <br /> to ignite in air <br /> > Fire point - Lowest temperature substance will ignite and <br /> burn <br /> >Auto-ignition - Lowest temperature substance will self- <br /> ignite <br /> > Explosive - Sudden, forcible expansion of gas & heat from <br /> contained substance <br /> ` ` Oxidizers - Substances that contain or produce oxygen .Y ::. <br />