Science

Yttrium Definition Yttrium is a silvery metallic element found in the same ores as elements of the lanthanide series. It is almost always found in…

Converting Percent to Fraction and Decimal When we talk, we often use different words to express the same thing. For example, we could describe the…

Palmitic Acid Definition Palmitic acid is a saturated fatty acid occurring as combustible white crystals in many natural oils (such as spermaceti and palm oil)…

Bastnäsite Definition Bastnäsite is a rare yellow to reddish-brown mineral consisting of a carbonate of fluorine and several lanthanide metals. It occurs in association with…

Catatonia Definition Catatonia is an abnormal condition often associated with schizophrenia and variously characterized by stupor, stereotypy, mania, and either rigidity or extreme flexibility of…

Plastid Definition Plastid is an organelle found in the cells of plants, green algae, red algae, and certain other protists. Like mitochondria, plastids have an…

Determining Percentage Percent means “for every 100” or “out of 100.” The (%) symbol as a quick way to write a fraction with a denominator…

Neodymium Definition Neodymium is a shiny, silvery metallic element of the lanthanide series. It is present in significant quantities in the ore minerals monazite and…

Cyanobacteria Definition Cyanobacteria are any of a phylum of photosynthetic bacteria that live in water or damp soil and were once thought to be plants.…

Comparing Decimal Numbers If there are two decimal numbers we can compare them. One number is either greater than, less than or equal to the…

Paranoia Definition Paranoia is a psychotic disorder characterized by systematized delusions, especially of persecution or grandeur, in the absence of other personality disorders. It is…

Scheelite Definition Scheelite is a white, brownish, or greenish mineral, usually fluorescent, consisting of calcium tungstate in tetragonal crystalline form with some tungsten often replaced…