Select the Correct Past Participle for Each Blank

question 9

Multiple Choice

Select the correct past participle for each blank. In addition, the famous bulb has ____ in the Guinness Book of World Records and on Ripley's Believe-It-or-Not .

• A) appear
• B) appeared

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Definitions:

Reaction

A process in which substances interact to form new substances with different properties.

Transformation

The process of changing the structure or properties of a molecule, often used in context with chemical transformations.

Reagents

Materials or chemicals introduced into a system to initiate a chemical reaction or to check for the presence of a reaction.

Transformation

A thorough or dramatic change in form or appearance; in biology, it refers to the genetic alteration of a cell by the introduction of DNA from an external source.