Which Assumption Must Be True for the Condensation Sequence to Explain

question 4

Multiple Choice

Which assumption must be true for the condensation sequence to explain the compositions of planets found in our solar system?

• A) The planets must have formed close to where they are found today.
• B) The Sun must have been cooler when it first formed than it is today.
• C) The planets must have formed within about 30 million years.
• D) The temperature of the entire solar nebula must have reached 1500 K.

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Definitions:

Bromine Water

A solution of bromine in water, used as a reagent to test for the presence of unsaturation in organic compounds.

Monosaccharides

The simplest form of carbohydrates, consisting of single sugar molecules like glucose and fructose, that serve as energy sources.

Reducing Sugars

Sugars capable of acting as reducing agents, having free aldehyde or ketone groups that allow them to reduce other compounds, commonly tested by Benedict's or Fehling's solution.

Ketose

A type of monosaccharide (simple sugar) where the carbonyl group is a ketone, found in several biochemical pathways.