chem test 3 t/f

According to Boyle’s Law (P₁V₁=P₂V₂), when increasing pressure to a gas, it will decrease in volume.

t

When a monosaccharide is reacted with Benedict’s reagent, a brick-red precipitate forms.

t

The average kinetic energy of molecules in a gas increases/decreases in proportion to the absolute temperature

t

A steroid is composed of 3 total rings.

f

When R-CHO is turned into R-CH₂OH, it is termed an oxidation reaction

f

Fats are usually isolated from plant sources and are liquids at room temp.

f

Octane will boil at a higher temperature than pentane.

t

As a gas is heated, its volume will decrease.

f

Amphipathic compounds like fatty acids will form micelles in water.

t

Cholesterol is an essential component of the cell membrane.

t

Carbohydrates have more energy (Cal/g) than fats.

f

A covalent bond (like C‒C) is an example of an intermolecular force.

f

A high LDL: low HDL cholesterol ratio is desirable for good health.

f

A molecule with all of the chiral centers inverted (mirror) is a diastereomer.

f

Gas molecules will diffuse from areas of higher  lower concentration

t

Sugar molecules found in the a-pyranose form cannot change to b-pyranose

f

Hydrogenation of a saturated fatty acid produces an unsaturated fatty acid

f

The conversion of a gas to a solid is termed condensation

f

The conversion of a liquid to a gas is termed vaporization

t

Type O blood is the universal donor because it has an extra

N-acetylgalactosamine compared to the other blood types

f