Instructions: Choose One Answer from Each Pair of Selections

question 27

Short Answer

Instructions: Choose one answer from each pair of selections. On a calm, cold day the temperature we perceive is often HIGHER | LOWER than the thermometer reading.

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Definitions:

Molecular Weight

The sum of the atomic weights of all atoms in a molecule, used in calculating concentrations and reactions in chemistry.

Ethylene Glycol

A toxic organic compound commonly used as an automotive antifreeze and a precursor to polymers.

1,2-Ethanediol

A chemical compound commonly known as ethylene glycol, used as an antifreeze and precursor to polymers.

Propanoic Acid

A colorless, oily liquid with a pungent odor, used in the manufacture of various chemicals, including as a preservative.