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

Word of the Day

enceinte:
enceinte: pregnant; with child.

Born on this day

August 30, 2015

1797 - Mary Shelley
1889 - Eduardo Ciannelli
1907 - Shirley Booth
1908 - Fred McMurray
1909 - Joan Blundell
1935 - Joan Phillips
1918 - Kitty Wells
1939 - John Peel
1941 - Sue MacGregor
1943 - Jean-Claude Killy
1952 - Dana
1972 - Cameron Diaz
www.Bridal-Shower-Games.com |Baby Shower Games | www.TwitterBackgrounds.org