chemical powder from the chemistry kit

acesulfame acid ammonium analytics background calcium carbonate chemical chemicals chemistry citric close closeup color copper corrosive cream dangerous design element extreme fertilizer filings flammable from hazard hazardous hexacyanoferrate hydroxide ice illustration iron kit lacmus leaching lens magnification magnified micro micrographs molecular nartium nitrate nitrogen organic oxidation photographed photomicrograph poison potash potassium powder safety salt science shapes sodium structure studio substance sulfate sweetener toxic waste yellow