Properties of Metals, Nonmetals and Metalloids

Property Metals Nonmetals Metalloids Luster Metals reflects light from their surface and can be polished for example in gold, silver and copper. Nonmetals does not reflect light. They are not lustrous. Malleability Metals can withstand hammering and can be shaped into thin sheets such as foils. Nonmetals are non-malleable. Metalloids are not malleable. Ductility Metals…

John Snow: Contributions to Society & Modern Epidemiology

John Snow, who was a practicing obstetrician in London during the Victorian era speculated that cholera, (originated from a contaminated water supply pump on Broad Street. Mayo Clinic (2017) has reported that “cholera is a bacterial disease usually spread through contaminated water. Cholera causes severe diarrhea and dehydration. Left untreated, cholera can be fatal in…

Lab Explained: Effect of Salinity on Seed Germination

Research Question How does salinity affect the seed germination of Solanum lycopersicum? Introduction Relevance to Real world Covering 14% of Australia and home to over two million people, the Murray Darling Basin is Australia’s largest and most iconic river systems (figure 1) (McCormick, 2015). As over one third of Australia’s food supply is produced by…