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cerium
Cerium is a rare-earth element primarily recognized for its role in industrial chemistry. It is most commonly encountered in the context of catalytic converters, where it helps manage exhaust emissions, and in the production of lighter flints due to its pyrophoric properties.
As a chemical element, it is treated as an uncountable mass noun. It refers to the substance in general rather than individual atoms or discrete objects, meaning it does not have a plural form in standard scientific or general usage.
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Ví dụ
Cerium is the most abundant of the rare earth elements.
I wonder if cerium is used in the production of these catalytic converters.
The professor explained that cerium belongs to the lanthanide series.
Most cigarette lighters use an alloy containing cerium to create sparks.
We need to analyze the purity of the cerium sample before starting the experiment.
Cerium oxide is widely used for polishing high precision glass lenses.
Is cerium reactive enough to ignite spontaneously in powder form?
The lab report indicates a high concentration of cerium in the mineral ore.
Cerium is essential for the efficiency of many modern automotive exhaust systems.
Cerium is essential for the efficiency of many modern automotive exhaust systems.