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15th Photohunt Theme 138: “Metal”
comment 14 Comments November 29, 2008 – 7:34 am
popping.. [met-l] noun, verb, -aled, or (especially British) -alled, -al.ling. –noun

1. any of a class of elementary substances, as gold, silver, or copper, all of which are crystalline when solid and many of which are characterized by opacity, ductility, conductivity, and a unique luster when freshly fractured.

“You see metals every day. Aluminum foil is a metal. Gold and silver are metals. If someone asks you whether an element is a metal, metalloid, or non-metal and you don’t know the answer, guess that it’s a metal.”

Alkali Metals

I chose Chemistry 101 for this week’s theme, that of the purest state of metals categorized under the periodic table of elements. Anybody still remember this from Junior High? We had to memorize the entire table along with its atomic symbol, atomic number and its atomic mass- all 103 at that time (I think!). As of 2006, there are now 117 elements. Glad I’m past memorization and I can just google everything! Yay!

According to this photo:

“Chemical elements (comprising the metals and non-metals) are the building blocks of everything. The Sun and stars, the silicon chips in our computers, and all the cells in our bodies are collection of elements.”

table of elements

It’s kinda hard to imagine that our bodies are made up of metals, isn’t it? It’s because when we think of metals- we think of hard objects, coins, copper, iron, tin, lead, nickel, cast irons, railroads, bridges, wires, sheet metals, brass, alloys, jewelries, gold and silver, etc!

What’s in our Bodies?

Calcium (Ca), Sodium (Na), Potassium (K), Iron (Fe), Magnesium (Mg), Zinc (Zn), Copper (Cu), Manganese (Mn) are just some of the major elements in the metals category found in our body and yes, even traces of Lithium (Li), Aluminum (Al), Silicon (Si) and Arsenic (As) in the metalloids category.



Find more photo hunters at

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Properties of Metals

“Metals share some common properties. They are lustrous (shiny), malleable (can be hammered), and are good conductors of heat and electricity. These properties result from the ability to easily move the electrons in the outer shells of metal atoms.”

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What are the Metals?

“Most elements are metals. There are so many metals, they are divided into groups: alkali metals, alkaline earth metals, and transition metals. The transition metals can be divided into smaller groups, such as the lanthanides and actinides.”

periodic table of elements

Griffith Observatory . Los Angeles . California

September 2008

Whew, that was some lessons! If you want to refresh your memory some more on the elements, the quoted items and further readings are lifted from here.

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