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

supererogatory:
supererogatory: going beyond the requirements of duty.

Born on this day

June 29, 2016

1728 - Captain James Cook
1910 - Frank Loesser
1921 - Jean Kent
1930 - Ian Bannen
1930 - Robert Evans
1942 - Charlotte Bingham
1943 - Roger Ruskin Spear
1953 - Colin Hay
1962 - Amanda Donohoe
www.Bridal-Shower-Games.com |Baby Shower Games | www.TwitterBackgrounds.org