Which term refers to the first firing of clay in the kiln and the point at which water can no longer be added?

• A. Achromatic
• B. Bisque
• C. Ceramics
• D. Earthenware

Answer: (B)

In ceramics, the first firing of clay is called a bisque firing. This initial heat treatment hardens the clay and changes its structure so it becomes ceramic and no longer remains plastic. Once bisque-fired, the material cannot be rehydrated to regain its plastic qualities; water can no longer be added to return it to a workable state. That makes bisque the term that specifically describes both the initial firing and the point at which reworking with water isn’t possible.

The other terms don’t fit this idea: achromatic relates to color without hue, ceramics is the broad category of clay-based work, and earthenware is a low-fire clay type, not the named phase of the first firing itself.