Quick Question Monday : Is Glass Really Made of Sand?


Quickest Quick Question Monday article ever, right? But you know that’s not the end of the story – if that were the only ingredient; we would all be starting fires on the bench to make glass.

In general, glass bottles are made from a variety of materials such as silica sand, soda ash, limestone, magnesium oxide, and aluminum oxide. If you happen to be looking at a colored glass bottle, you may find additional materials such as zinc, fluorides, icon, copper, etc. But since a glass bottle typically contains about 70 to 74 percent silica by weight, the main ingredient is still… you’ve guessed it… sand.

The process of melting sand (and other ingredients) into glass requires a lot of heat and expertise. For ages, skilled craftsmen would blow the glass and work the material into a usable bottle, or roll it into beautiful sheets of glass panes for churches and cathedrals. Glass produced today uses high precision tools to manufacture bottles and jars with tight tolerances and consistent quality. Since we have already covered in detail the process of glass making here, we’ll let you learn more there.

If you are interested in a deeper dive on this question, we found a great online video that may interest you:

If you have questions about the glass production process we use today, feel free to leave it in the comment section below.

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