| 释义 |
Definition of calcium carbonate in English: calcium carbonatenoun mass nounA white insoluble solid occurring naturally as chalk, limestone, marble, and calcite, and forming mollusc shells and stony corals. Chemical formula: CaCO₃ Example sentencesExamples - When the solution of calcium bicarbonate reaches the open cavern and the water evaporates, carbon dioxide is released and calcium carbonate remains.
- Stalactites grow when water laden with carbon dioxide and calcium carbonate drips from cracks or holes in the cave's ceiling.
- Calcium is found in chalk, marble, and limestone, which are all forms of calcium carbonate.
- Calcium carbonate is quite insoluble in water and sinks to the bottom.
- Karst features are formed by the dissolution of calcium carbonate in limestone bedrock by mildly acidic groundwater.
- Corals build their skeletons from waterborne calcium carbonate, the same mineral that makes limestone.
- Some spicules are formed of the mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin.
- Mollusc shells are made primarily of calcium carbonate, with traces of strontium and other elements.
- Marl is a granular or loosely consolidated earthy material comprised largely of shell fragments and calcium carbonate precipitated in ponds.
- Organisms as diverse as phytoplankton, corals, crabs and molluscs lay down limestone or calcium carbonate skeletons.
- Marine sediments are typically rich in calcium carbonate from shells, but increased acidity causes it to dissolve.
- Maerl is composed of chalk - calcium carbonate - with an outer living plant layer.
- Heating and agitation, after the introduction of sodium carbonate, precipitated calcium carbonate, and waste material settled.
- Calcium supplements come in various forms with the most popular forms being calcium citrate and calcium carbonate.
- The correct, balanced chemical formula for calcium carbonate is CaCO 3.
- When water becomes supersaturated in dissolved calcium carbonate, solid calcium carbonate can grow by precipitation from the water.
- Insoluble calcium carbonate is basically chalk.
- Oolithic limestones are composed of calcium carbonate in concentric spheres that were produced by high wave energy.
- The skeletons of dead chromists accumulate on the floor of lakes and oceans, where they may become thick deposits of silica or calcium carbonate.
- The shells of marine creatures are made of calcium carbonate, the same substance as chalk, which is vulnerable to acidity.
- Members of the order and superfamily Craniacea have subcircular shells composed of calcium carbonate.
- Last year six British geologists went diving in Greenland in search of ikaite, a rare form of calcium carbonate, which grows from the fjord floor in columns.
- Researchers are exploring ways to convert carbon dioxide into calcium carbonate - the equivalent of dirt.
- When you make cement you make calcium oxide which can react with carbon dioxide and make calcium carbonate.
- Hard deposits in the cells, such as calcium carbonate and silica, may have a pronounced dulling effect on cutting tools.
- Close to the area of their formation these waters are well oxygenated, cold, and supersaturated with dissolved calcium carbonate.
- Loosely speaking, calcium carbonate is limestone and there is an awful lot of limestone present throughout the world.
- Antacids based on calcium carbonate have been used for over 2,000 years.
Definition of calcium carbonate in US English: calcium carbonatenounˈkælsiəm ˈkɑrbəˌneɪt A white insoluble solid occurring naturally as chalk, limestone, marble, and calcite, and forming mollusk shells and stony corals. Chemical formula: CaCO₃ Example sentencesExamples - Heating and agitation, after the introduction of sodium carbonate, precipitated calcium carbonate, and waste material settled.
- The shells of marine creatures are made of calcium carbonate, the same substance as chalk, which is vulnerable to acidity.
- Stalactites grow when water laden with carbon dioxide and calcium carbonate drips from cracks or holes in the cave's ceiling.
- Antacids based on calcium carbonate have been used for over 2,000 years.
- Researchers are exploring ways to convert carbon dioxide into calcium carbonate - the equivalent of dirt.
- When you make cement you make calcium oxide which can react with carbon dioxide and make calcium carbonate.
- Marine sediments are typically rich in calcium carbonate from shells, but increased acidity causes it to dissolve.
- Members of the order and superfamily Craniacea have subcircular shells composed of calcium carbonate.
- Organisms as diverse as phytoplankton, corals, crabs and molluscs lay down limestone or calcium carbonate skeletons.
- Calcium supplements come in various forms with the most popular forms being calcium citrate and calcium carbonate.
- Marl is a granular or loosely consolidated earthy material comprised largely of shell fragments and calcium carbonate precipitated in ponds.
- Maerl is composed of chalk - calcium carbonate - with an outer living plant layer.
- Karst features are formed by the dissolution of calcium carbonate in limestone bedrock by mildly acidic groundwater.
- Calcium carbonate is quite insoluble in water and sinks to the bottom.
- Some spicules are formed of the mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin.
- Calcium is found in chalk, marble, and limestone, which are all forms of calcium carbonate.
- When water becomes supersaturated in dissolved calcium carbonate, solid calcium carbonate can grow by precipitation from the water.
- Loosely speaking, calcium carbonate is limestone and there is an awful lot of limestone present throughout the world.
- Mollusc shells are made primarily of calcium carbonate, with traces of strontium and other elements.
- Close to the area of their formation these waters are well oxygenated, cold, and supersaturated with dissolved calcium carbonate.
- When the solution of calcium bicarbonate reaches the open cavern and the water evaporates, carbon dioxide is released and calcium carbonate remains.
- Corals build their skeletons from waterborne calcium carbonate, the same mineral that makes limestone.
- Hard deposits in the cells, such as calcium carbonate and silica, may have a pronounced dulling effect on cutting tools.
- Last year six British geologists went diving in Greenland in search of ikaite, a rare form of calcium carbonate, which grows from the fjord floor in columns.
- Oolithic limestones are composed of calcium carbonate in concentric spheres that were produced by high wave energy.
- Insoluble calcium carbonate is basically chalk.
- The correct, balanced chemical formula for calcium carbonate is CaCO 3.
- The skeletons of dead chromists accumulate on the floor of lakes and oceans, where they may become thick deposits of silica or calcium carbonate.
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