Question

1. choose the best answer.

a ____ compound is made in a laboratory and may or may not include carbon.

○ fabricated
○ synthetic
○ counterfeit
○ simulated

1. choose the best answer.

____ is an example of a synthetic compound.

○ salt
○ sugar
○ plastic
○ carbon dioxide

Explanation:

Question 5

To solve this, we analyze each option:

• "fabricated" often implies constructing or making in a general sense, not specific to chemical compounds made in a lab.
• "synthetic" refers to compounds made artificially (in a lab), which matches the description of being made in a laboratory and may or may not have carbon.
• "counterfeit" means fake or forged, usually for imitating something valuable (like money or goods), not for chemical compounds.
• "simulated" means imitating or replicating, not the same as creating a compound in a lab.

We analyze each option:

• "Salt" (sodium chloride) can be found naturally (e.g., in seawater or salt mines) and is not typically considered a synthetic compound made primarily in a lab.
• "Sugar" (like sucrose) is found naturally in plants (e.g., sugarcane, beets) and is not a synthetic compound made in a lab as its primary source.
• "Plastic" is a synthetic compound made in laboratories through chemical processes (polymerization of various monomers).
• "Carbon dioxide" is a naturally occurring gas (produced by respiration, combustion) and is not synthetic.

Answer:

B. synthetic

Question 6