Gas-Burning Fireplaces ____

question 8

Multiple Choice

Gas-burning fireplaces ____.

• A) are a feature of old homes
• B) are installed as a unit
• C) are becoming less and less common
• D) are not very efficient

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Definitions:

Polar Covalent

A type of chemical bond where a pair of electrons is unequally shared between two atoms, causing a partial charge.

Lipids

A broad group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins, and other components essential for cell structure and function.

Phospholipids

A type of lipid molecule that is a major component of all cell membranes, consisting of a phosphate head and two fatty acid tails.

Saturated Acids

Fatty acids that have no double bonds between the carbon atoms of the fatty acid chain, making them typically solid at room temperature.