![](http://www.alamy.com/thumbs/6/EBA57094-2D08-4774-A36D-88B19A2BB29F/D2MXR0.jpg)
name, chemical formula and structure diagram of Ozone handwritten on blackboard
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Photo credit: © Yury Zap / Alamy / Afripics
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Keywords: black, blackboard, chalkboard, chemical, chemistry, definition, determination, diagram, education, formula, gas, handwritten, molecular, oxygen, ozone, school, science, structure, white