Carmel-by-the-Sea's New Food Packaging Requirements Council Discretionary Funds Grant Application Packet
Introduction. The term heavy metal refers to any metallic chemical element that has a relatively high density and is toxic or poisonous at low concentrations. Examples of heavy metals include mercury (Hg), cadmium (Cd), arsenic (As), chromium (Cr), thallium (Tl), and lead (Pb).
Corrosionpedia explains Metalloid. Metalloids are a group of elements that share characteristics of both metals and nonmetals, and are typically semi-conductors, which means that they both insulate and conduct electricity. This semi-conducting property makes metalloids very useful as a computer chip material.