<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Isendlalelo: Umlando wamakhemikhali umelela isikhathi esivela emlandweni wasendulo kuze kube manje. Ngo-1000 B.C., impucuko yayisisebenzisa ubuchwepheshe okwagcina sekuyisisekelo samagatsha ahlukahlukene amakhemikhali. Izibonelo zihlanganisa ukukhipha izinsimbi ezinsimbini, ukwenza izitsha zobumba kanye ne-glazes, ukuvutshelwa kwebhiya newayini, ukukhipha amakhemikhali ezitshalweni zemithi namakha, ukuguqula amafutha abe insipho, ukwenza ingilazi, Umbuzo: Yisiphi isikhathi esibekiwe seChemistry?  <response>: umlando wasendulo kuze kube namuhla 