The Reaction CH₂=CH₂ + H₂ → CH₃CH₃ Would Best Be

question 37

Multiple Choice

The reaction CH₂=CH₂ + H₂ → CH₃CH₃ would best be described as:

• A)substitution.
• B)combustion.
• C)addition.
• D)hydrogenation.
• E)none of the above

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Definitions:

Optimal Period

A time frame during which a particular developmental and learning opportunity is most effective.

Normal Development

The typical progression through a series of growth stages that an organism experiences, often thought of in terms of physical, cognitive, and social/emotional development.

Motor-Skill Development

The progression of muscular coordination and the ability to perform complex physical activities over time.

Fine Motor Skills

The capability to use small muscles, typically in the hands and fingers, for tasks requiring precision, such as writing or manipulating small objects.