ARTICLES

Lead is toxic because it aggressively replaces essential metals in the human body. In biochemical reactions, lead takes the place of substances such as zinc, calcium and iron in molecules and protein enzymes. This change...

www.reference.com/article/lead-toxic-196c175dc44bbece

Peru is the third largest country in South America, with a total population of 27,947,000. Peru contains three distinct geographical regions: the coast in the western part of the country, the Andean highlands in central ...

www.reference.com/article/peru-9474b090d01cac46

Smoking has killed more than 20 million Americans since 1964, while around 8.6 million people are suffering from serious smoking-related illnesses as of 2015. Around 90 percent of lung cancers and 80 percent of chronic o...

www.reference.com/article/smoking-b64a081ade3a6b3d

SIMILAR ARTICLES

None of the three chemicals most commonly used in dry fire extinguishers is acutely toxic. One component, monoammonium phosphate, has the potential to cause minor skin irritation and is classed in the same category as ac...

www.reference.com/science/fire-extinguisher-powder-toxic-3979dbb14c7d716a

No one knows exactly where or when lead was discovered. What is known is that by Roman times, lead was being widely used, so scientists to believe it has been around for thousands of years.

www.reference.com/article/lead-discovered-d3b3ca36c5c25cd2

When lead(II) nitrate is heated, it decomposes into lead (II) oxide, nitrogen dioxide and oxygen. The balanced chemical equation for this reaction is 2 Pb(NO3)2 (s) produces 2 PbO (s) + 4NO2 + O2 (g). Lead (II) nitrate i...

www.reference.com/science/happens-lead-nitrate-heated-f0c19944c40490b5

Solder alloys are made from a mixture of tin, lead, brass and silver. Solder made from tin and lead has a lower melting point, while brass and silver are used to create an alloy able to withstand higher temperatures.

www.reference.com/article/metals-used-make-solder-69ce129aa6270ccd