Question

carbon dioxide molecule
below is a model of a carbon dioxide molecule, consisting of one carbon atom connected with two oxygen atoms.
in its pure form, carbon is a solid and oxygen is a gas. when they combine to form a carbon dioxide molecule, they exist as a gas at room temperature.

in its pure form, what state of matter is carbon?

• plasma
• liquid
• solid

Explanation:

Identify the target element

The question asks for the state of matter of carbon in its pure form.

Analyze the provided context

The text on the left states: "In its pure form, carbon is a solid and oxygen is a gas."

Select the matching option

Based on the context and chemical facts, pure carbon (such as graphite or diamond) is a solid at room temperature.

Answer:

• plasma
• liquid
• solid (Correct answer)