In a Typical Pre-Post Study

question 49

Multiple Choice

In a typical pre-post study

• A)two groups are measured before and after a treatment.
• B)two groups are measured after a treatment.
• C)one group is measured after a treatment.
• D)one group is measured before and after a treatment.

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Definitions:

Chemical Weathering

The process by which rocks are decomposed, dissolved, or loosened by chemical processes, often involving water.

Dissolution

The process by which a solid substance is dissolved in a liquid, becoming a part of the liquid solution.

Oxidation

A chemical reaction where a substance loses electrons, often leading to rust formation in metals.

Hydrolysis

A decomposition reaction involving water and commonly producing clays, as in soil.