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well i dont really know this "chemistry" things, sorry i wish i could help.
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Tiny hard needles of silica or calcium carbonate that make up the skeleton of some sponges?
spicules
Are all rocks magnetic?
No. Mainly rocks with a high content of iron. Rocks such as silica or calcium carbonate are not.
Stalactites and stalagmites consist of deposits of?
silica. +++ Wrong. They are of the mineral Calcite: crystalline calcium carbonate derived from the limestone above the cave.
Is limestone a source of silica?
In pure form, limestone is calcium carbonate, and does not contain silica. However, in SOME strata of limestone, silica can be present as an impurity.
What minerals are in a limestone?
Limestone commonly predominantly contains Calcite and Aragonite which are the two crystal forms of Calcium Carbonate (CaCO3). It commonly also contains detrital clasts (broken pieces of other material) such as flint or chert which are silica. Some limestones also contain the mineral dolomite which is Calcium Magnesium Carbonate (CaMg(CO3))2.
The compound formed by the reaction between calcium oxide and silica?
Calcium silicate.
What is Main ingredient in ordinary glass?
Silica.
Tiny hard needles of silica or calcium carbonate that make up the skeleton of some sponges?
spicules
Are all rocks magnetic?
No. Mainly rocks with a high content of iron. Rocks such as silica or calcium carbonate are not.
Is limestone a type of silica?
No, it is not flaky . it is calcium carbonate , a sedimentary rock. it's made of shells of animals.
How do living things affect the amount of calcium and silica in the oceans?
Well crustaceans make their shells from calcium carbonate, and when they die it puts extra calcium into the environment.
What 2 materials may compose a sponge skeleton?
1. spicules (calcium carbonate or silica) 2. spongin (protein)
What is the composition of colgate?
It contains Sodium, Monofluoro Phosphate, Calcium Carbonate, Silica, Triclosan, mint extract for flavour and base
Stalactites and stalagmites consist of deposits of?
silica. +++ Wrong. They are of the mineral Calcite: crystalline calcium carbonate derived from the limestone above the cave.
Does weakly acid groundwater dissolves sandstone to form caves?
Weakly acidic groundwater can slowly dissolve minerals like calcite in sandstone, but it typically does not create large caves in sandstone formations. Sandstone is more resistant to dissolution compared to limestone, which is more commonly associated with cave formation due to its high solubility in acidic water. Sandstone may exhibit some minor features like dissolution pockets or small cavities, but it is not a common host rock for the development of extensive cave systems.
Is limestone a source of silica?
In pure form, limestone is calcium carbonate, and does not contain silica. However, in SOME strata of limestone, silica can be present as an impurity.
What kind of rock is tooth paste made out of?
Tooth paste is not made from rocks, but do have abrasives such as hydrated silica, sodium bicarbonate and calcium carbonate.
