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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.
Tiny hard needles of silica or calcium carbonate that make up the skeleton of some sponges?
Spicules are tiny hard needles made of silica or calcium carbonate that provide structural support to the body of certain sponges. These spicules can vary in shape and size depending on the species of sponge and are often used in taxonomy to classify sponges.
What is the difference between calcareous ooze and siliceous ooze?
Calcareous ooze is a type of deep-sea sediment primarily composed of the mineral calcite, which is derived from the shells of marine organisms like foraminifera and coccolithophores. Siliceous ooze, on the other hand, is composed of silica-based minerals such as opal, originating from the silica skeletons of diatoms and radiolarians. The main difference between the two lies in the mineral composition, with calcareous ooze being calcite-based and siliceous ooze being silica-based.
Which group of protists possess calcium carbonate shells?
Foraminiferans (or forams) are single-celled protists with a calcium carbonate (CaCO3) shell around their plasma membrane. ***Straight out of my biology text book
What are the elements present in chalk?
Chalk is predominantly calcium carbonate. Therefore, its elements are calcium, carbon, and oxygen.
The compound formed by the reaction between calcium oxide and silica?
Calcium silicate.
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.
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 is the composition of colgate?
It contains Sodium, Monofluoro Phosphate, Calcium Carbonate, Silica, Triclosan, mint extract for flavour and base
What 2 materials may compose a sponge skeleton?
1. spicules (calcium carbonate or silica) 2. spongin (protein)
What compound is limestone mainly made up of?
Limestone is mainly made up of the mineral calcite, which is a form of calcium carbonate. It may also contain varying amounts of other minerals such as clay, dolomite, and silica.
What is chemical composition of limestone?
Limestone is primarily composed of the mineral calcite (calcium carbonate, CaCO3) and may also contain clay, silt, and silica in varying amounts. Other minerals such as dolomite (calcium magnesium carbonate, CaMg(CO3)2) may also be present in some limestone formations.
What is an obsidian rocks' reaction to vinegar?
Obsidian, being a volcanic glass composed primarily of silica, does not react with vinegar (acetic acid) in the same way that limestone or other carbonate rocks do. Since obsidian lacks calcium carbonate, there is no fizzing or bubbling reaction when vinegar is applied. Instead, the surface of the obsidian may become slightly cleaner due to the acidic nature of vinegar, but there is no significant chemical reaction.
Tiny hard needles of silica or calcium carbonate that make up the skeleton of some sponges?
Spicules are tiny hard needles made of silica or calcium carbonate that provide structural support to the body of certain sponges. These spicules can vary in shape and size depending on the species of sponge and are often used in taxonomy to classify sponges.
What is the difference between calcareous ooze and siliceous ooze?
Calcareous ooze is a type of deep-sea sediment primarily composed of the mineral calcite, which is derived from the shells of marine organisms like foraminifera and coccolithophores. Siliceous ooze, on the other hand, is composed of silica-based minerals such as opal, originating from the silica skeletons of diatoms and radiolarians. The main difference between the two lies in the mineral composition, with calcareous ooze being calcite-based and siliceous ooze being silica-based.
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.
Which group of protists possess calcium carbonate shells?
Foraminiferans (or forams) are single-celled protists with a calcium carbonate (CaCO3) shell around their plasma membrane. ***Straight out of my biology text book
