Question

chapter 7 quiz: what function does the...

what function does the wet lime plaster have in the buon fresco technique?

multiple choice

binder

brush

encaustic

pigment

vehicle

Explanation:

Identify the core question

The question asks for the function of wet lime plaster in the buon fresco painting technique.

Analyze the buon fresco technique

In buon fresco (true fresco), pigments are mixed with water and applied directly onto wet lime plaster. As the plaster dries, a chemical reaction occurs: the lime (calcium hydroxide) reacts with carbon dioxide in the air to form calcium carbonate. This process locks the pigment particles directly into the wall's surface.

Evaluate the options

• binder: A binder holds pigment particles together and adheres them to a support. In buon fresco, no external binder is added to the paint; instead, the wet lime plaster itself acts as the binder as it cures.
• brush: A brush is a tool used to apply paint, not a chemical or structural component like plaster.
• encaustic: Encaustic is a painting technique that uses heated beeswax as a binder, which is unrelated to fresco.
• pigment: Pigment is the coloring agent, which is applied onto the plaster, not the plaster itself.
• vehicle: The vehicle is the liquid carrier (which is water in fresco), whereas the plaster serves as the binding ground.

Connect to mastered concepts

Using the Artistic Techniques knowledge point, we recognize that different painting mediums rely on specific binders to secure pigments. In buon fresco, the wet lime plaster serves this essential binding function chemically.

Answer:

• binder (Correct answer)
• brush
• encaustic
• pigment
• vehicle