https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa Kelas 4 IBNU SINA en-us 2021-06-07 13:02:23 UTC 2025-11-06 09:19:48 UTC hello@padlet.com meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589908918 made from silica (silicon dioxide) without adding any other chemical.]]> 2021-06-07 13:23:15 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589908918 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589911275 Fused silica glass is suitable to be used in making telescope lens.]]> 2021-06-07 13:24:04 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589911275 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589913556 Silica requires high temperatures around 1800 degree celcius to melt. Hence, fused silica glass has a high melting point.

]]> 2021-06-07 13:24:47 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589913556 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589937088 It is made from silica, soda (sodium carbonate) and limestone (calcium carbonate).]]> 2021-06-07 13:32:23 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589937088 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589943372 Soda (sodium carbonate) lowers the melting point of silica. Hence, soda glass has a low melting point, around 1000 degree celcius.]]> 2021-06-07 13:34:25 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589943372 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589945831 This glass is easily moulded and used to make glass containers such as bottles and jugs.]]> 2021-06-07 13:35:13 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1589945831 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1590409534 It is made from silica, soda (sodium carbonate), limestone (calcium carbonate), boron oxide and aluminium oxide.]]> 2021-06-07 16:06:43 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1590409534 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1590412389 It is made from silica, soda (sodium carbonate) and lead (II) oxide, PbO.]]> 2021-06-07 16:07:42 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1590412389 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707804682 This glass does not expand nor contract much when there is a large change in temperature.]]> 2021-08-31 18:25:12 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707804682 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707823525 This glass cannot withstand high temperatures and can easily crack when subjected to sudden temperature change.]]> 2021-08-31 18:34:37 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707823525 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707843606 Do not crack easily when subjected to thermal stress because of its low expansion coeficient. ]]> 2021-08-31 18:44:57 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707843606 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707844533 Resistance to heat.]]> 2021-08-31 18:45:23 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707844533 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707845361 Borosilicate glass can be removed from the refrigerator and heated immediately without cracking.]]> 2021-08-31 18:45:50 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707845361 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707846028 2021-08-31 18:46:11 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707846028 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707847531 2021-08-31 18:46:59 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707847531 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707850100 2021-08-31 18:48:17 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707850100 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707851396 2021-08-31 18:48:59 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707851396 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707858151 Lead, Pb replaces calcium, Ca to produce glass that is softer and denser.]]> 2021-08-31 18:52:34 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707858151 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707858991 Lead glass is heavier and have high refractive index.]]> 2021-08-31 18:52:57 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707858991 meenanajihah https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707861269 Suitable in making prisms.]]> 2021-08-31 18:54:17 UTC https://padlet.com/meenanajihah/ataw2iz1p2ltu2aa/wish/1707861269