1.
GLASS <ul><li>GLASS is the main com-ponent is SiO2, it uses quarts or silica, all of them is, made from SiO2, a mineral substance in a pure state. </li></ul>

2.
GLASS continued… <ul><li>GLASS is a biological material, and it made from clear and smooth material. Glass used by many things, but too easy to break down. </li></ul><ul><li>GLASS is making window, bottles, glasses, etc. </li></ul>

3.
WINDOW <ul><li>A window is a transparent or a translucent opening in a wall or door that allows the passage of light and, if not closed or sealed, air and sound. </li></ul><ul><li>Many glazed windows may be opened, to allow ventilation, or closed, to exclude inclement weather. </li></ul>

4.
BOTTLE <ul><li>A bottle is a rigid container with a neck that is narrower than the body and a &quot;mouth&quot;. </li></ul><ul><li>Typically used to store liquids such as water, milk, soft drinks, beer, wine, cooking oil, medicine, shampoo, ink, and chemicals. </li></ul>

5.
GLASSES <ul><li>Glasses – also called eyeglasses, spectacles, or specs – are frames bearing lenses worn in front of the eyes, normally for vision correction or eye protection. </li></ul><ul><li>Safety glasses are a kind of eye protection against flying debris or against visible and near visible light or radiation. Sunglasses allow better vision in bright daylight </li></ul>