Lead | Chemistry

Boston Latin Academy, Boston, Massachusetts, U.S.A.

Lead, 82, Boston Latin Academy, Massachussetts USA

2019 International Year of the Periodic Table Timeline of Elements: Lead, 82 - AY Jackson Secondary School - Toronto, Ontario, Canada - Teacher: Laila Hassam - Artist: Haohan Zhang

Lead: The 88 students in my regular chemistry classes at Boston Latin Academy, a public exam high school, created two periodic table squares each. One square was an element unique to them and the other was lead. I selected lead because in my previous career, I worked on many hazardous waste sites contaminated with lead. My classes will make a periodic table with the individual squares to celebrate the International Year of Chemistry. This lead square, created by 11^th grader Katy Carchedi, represents sources of lead in household drinking water which is a public health problem in buildings with older pipes containing lead solder.

Katherine Fogarty, Teacher Chemistry and Environmental Science Boston Latin Academy, Boston, Massachusetts, U.S.A.

Atomic properties*

Name:

Lead

Symbol:

Pb

Atomic number:

82

Atomic mass:

207.2 amu

Melting point:

327.46°C

Boiling point:

1749°C

Density:

11.3 g/cm³

Electronegativity:

1.8

# of Isotopes:

5

State:

Solid

Colour:

Bluish-white**

Classification:

Metallic**

* Haynes, W. M. (2011). CRC Handbook of Chemistry and Physics, 91st edition: http://www.hbcponline.com/ Retrieved April 7, 2011

** Winter, M. (2010). Home of the Periodic Table. Retrieved April 8, 2011, from Web Elements: http://www.webelements.com/