Foundations of modern chemistry In 1774, Antoine Lavoisier used the reaction of water steam with metallic iron inside an incandescent iron tube to produce hydrogen in his experiments leading to the demonstration of the conservation of mass, which was instrumental in changing chemistry from a qualitative science to a quantitative one.
foUNdAtiOnS oF modErn cHEmisTry in 1774, AntoiNe lavoIsIEr uSeD the ReaCtiOn of water STeAm witH mETAllIc iRoN iNSide an iNcanDesceNT iron tUbe To PRoduCe HydRogEN iN his experImenTs LeadinG TO ThE demonsTrAtIon oF the COnseRvatiOn of MAss, wHiCh was INStrumENtAl In cHaNgiNg CHemistrY from A qUaLitATive sCiencE To A quanTITATivE one.