FaqKids.com

="answers
Q:
What is glass, how is it made?
A:

Glass has been made by humans for about 4,500 years, and it generally consists of silica (sand), potassium or soda, lime, and occasionally some other chemicals. They are melted together and cooled at air temperature so that the material is hard, but has a smooth and flowing shape, more like a liquid. The precise recipe for glass changes from place to place — the chemistry and techniques are often closely guarded secrets.

In: Science
Answer provided by Yahooligans.com
related questions

Share This Site

Born on this day

December 8, 2018

1925 - Sammy Davis Jnr
1943 - Jim Morrison
1930 - Maximilian Schell
1936 - David Carradine
1939 - Jennie Linden
1941 - Sir Geoff Hurst
1953 - Kim Basinger
1964 - Teri Hatcher
1966 - Sinead O'Connor
www.Bridal-Shower-Games.com |Baby Shower Games | www.TwitterBackgrounds.org