Particulate Matter

question 53

Multiple Choice

Particulate matter

• A) is, by definition, larger than 100 microns.
• B) can include material in smoke.
• C) has not yet been studied by scientists.
• D) has not been associated with health risks.

---

Definitions:

Elemental Symbol

A notation consisting of letters that represent a chemical element, used in chemical formulas and equations.

Fluorine

A chemical element with the symbol F and atomic number 9, known for its extremely high electronegativity and reactivity.

Elemental Symbol

A one- or two-letter abbreviation used to represent an element on the periodic table, based on its English or Latin name.

Ag

The symbol for Silver, a chemical element with valuable electrical conductivity, thermal conductivity, and reflectivity properties.