Porcelain

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/porcelain

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the composition?Primarily kaolin, feldspar, and quartz, fired at high temperatures
2. What is the vitrification level?Fully vitrified, resulting in very low water absorption (<0.5%) and high density
3. Why is porcelain so strong and not porous?When it is fired, the clay melts and turns into a glassy, tight structure that doesn’t let water or air pass through. This makes it very hard and able to resist cracks.
4. How is porcelain made?Potters mix a pure white clay called kaolin with a mineral called petuntse and fire the mixture at more than 1,200 °C. The heat fuses the parts together into a dense, smooth piece.

Vitrification: The process of transforming a material into a glass-like, non-crystalline solid through intense heat and fusion.
Kaolin: A fine, white, plastic clay mineral, essential for porcelain's purity, whiteness, and firing characteristics.
Petuntse (Feldspar): A fluxing agent that melts during firing, binding the other components and contributing to vitrification.