METALS: All metals conduct electricity (thus the need for a
“ground” wire). - Brass: Mixture of copper (55%-95%) and zinc
and sometimes lead (for strength). May also have some lead, tin,
nickel, etc. Yellow brass has 70% copper. - Bronze: Alloy of
copper and tin (25%) and sometimes lead, zinc, phosphorous. -
Copper: Usually plated because it’s too soft to hold shape
(unless its fairly thick). Known for its ability to conduct
electricity and heat. Brass, bronze, copper, aluminum, and
chrome do not rust and resist corrosion, so they are often used
for outdoor lights. A green or brown patina forms over time and
helps prevent corrosion. A magnet will not adhere to brass,
bronze, or pot metal. - Chrome: Hard brittle gray metal used to
plate other metals to give them a shiny finish. - Pewter: Alloy
of tin (95%) and copper or antimony (sometimes aluminum is
substituted which is very light in weight). Pewter, copper, and
pure silver dent easily. - Tin: Soft and easy to bend. Will
rust. Often used in solder. - Tôle: H