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A combination of both. The clay minerals partially melt (physical), and react with each other and the oxygen in the kiln (chemical)

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Is clay irreversible?

Clay can exhibit both reversible and irreversible properties depending on its treatment. When clay is wet, it can be molded and shaped, making it reversible; however, once it is fired in a kiln, it undergoes a chemical change that hardens it, making it irreversible. This transformation means that fired clay cannot return to its original plastic state. Thus, the reversibility of clay largely depends on whether it has been fired or not.


What are malleable wax unbaked clay baked clay or metal?

Malleable wax is a pliable material that can be shaped and molded before hardening. Unbaked clay is clay that has not been fired in a kiln, so it remains soft and can be reworked. Baked clay has been fired in a kiln, making it hard and durable. Metal can be shaped and molded when heated, but once cooled and hardened, it retains its shape.


Is making bricks a physical change?

Yes, making bricks involves a physical change. The process typically includes mixing clay and water, shaping the mixture into bricks, and then drying or firing them in a kiln. While the physical properties of the clay are altered, such as its shape and hardness, the chemical composition of the materials remains the same, classifying it as a physical change.


What is potters raw material?

The raw materials used by potters typically include clay, water, and various minerals or additives depending on the desired properties of the final ceramic piece. These materials are combined, shaped, and fired in a kiln to create pottery.


What is the raw material of brick?

The Thing Made Of Stones Are Called Bricks