When an Experiment Has Shown That an Independent Variable Is

question 133

Multiple Choice

When an experiment has shown that an independent variable is a cause of a phenomenon, what is the most reasonable conclusion one should draw?

• A) The hypothesis has been proven correct.
• B) The scientific question has been answered once and for all.
• C) There is evidence that supports the hypothesis, though multiple experiments and methods are still needed.
• D) There is some evidence for an association, but one should be cautious about drawing causal conclusions.

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Definitions:

Base-promoted Hydrolysis

A chemical reaction where a base speeds up the hydrolysis process, commonly involving cleavage of bonds by the addition of water.

Fats

Molecules composed of triglycerides that are solid at room temperature, commonly found in animals and some plants, and serve as a major energy source.

Oils

Organic substances that are liquid at room temperature and are insoluble in water but soluble in organic solvents.

Fatty Acid Structures

The molecular arrangement of fatty acids, which typically consist of long hydrocarbon chains with a terminal carboxylic acid group; can be saturated or unsaturated.