The chemical compound silicon dioxide, also known as silica (from the Lation Silex), is an oxide of silicon with a chemical formula of SIO2 and has been known for its hardness since antiquity.
Go to the doctor.
DONT USE THIS SITE IT SUCKS BADLY![[User:70.79.96.123|70.79.96.123]] 19:55, 12 Jan 2009 (UTC)~
Asbestos,coal,graphite,gypsum,iron,limestone,maganese,mica and sillica sand etc
If your on about the cillia cell then it is use to waft thr egg through the fluopen tube. Also it has ting hairs which keep away dust and germs.
The chemical compound silicon dioxide, also known as silica (from the Lation Silex), is an oxide of silicon with a chemical formula of SIO2 and has been known for its hardness since antiquity.
Mostly silver but a little bit of many things. Idaho is nicknamed the gem state.
Aa is slower, cooler, and has less sillica than pahoehoe. Pahoehoe is faster and moves quickly, and phoehoe has more silica, and is also darker than Aa
sial stands for silica and aluminum, it makes up the continetal crust && sima is sillica and magnesium which makes up the oceanic crust. Sial is less dense so it can float above the mantle and sima is generally thinner(about 10km). hope that helps! =^D
in the shop. this can not be found anywhere else
Salt is dissolved in the water so when we heat it the water evaporates leaving salt below. Salt water can't evaporate. However, the water fraction of it can, and often does, but then the salt (Sodium Chloride, NaCl), is left behind. A look at the Utah salt flats shows what it looks like when it's left. This can happen when a large inland sea is then cut off from the sea, and the water is evaporated over time, leaving behind a salt lake. These can then become buried by sediment and become a certain type of rock called "evaporites", so called because the water evaporated and left a mineral 'deposit'. A lot of the water vapour in the atmosphere is evaporated sea water, and if you watch the evolution of a hurricane for instance, you will see that the system builds over water as it collects water vapour, then dissipates over land.
Limestone is softer than marble because of how they are formed inside. Marble consists of tightly interlocked crystals, which makes it stronger than limestone. Limestone consists of small fossil fragments and smaller crystals, which makes it weaker than marble.