Heavy Metals Quiz

Defining Heavy Metals

• Heavy metals are defined by their relatively high densities, atomic weights, or atomic numbers.
• Criteria for heavy metals and the inclusion of metalloids vary depending on the author and context.
• In metallurgy, heavy metals may be defined based on density, while in physics, atomic number may be the distinguishing criterion.
• Specific definitions have been published, but none have been widely accepted.
• The surveyed definitions encompass up to 96 out of the 118 known chemical elements.
• Only mercury, lead, and bismuth meet all the surveyed definitions of heavy metals.
• Despite lack of agreement, the term is widely used in science.
• A density of more than 5 g/cm3 is sometimes quoted as a commonly used criterion for heavy metals.
• The earliest known metals include common metals such as iron, copper, and tin, as well as precious metals such as silver, gold, and.
• The text does not provide the complete information about precious metals.
• The text ends abruptly, leaving the last bullet point incomplete.
• The text does not provide a complete conclusion regarding the heavy metals.