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Chemistry
| Term | Definition |
|---|---|
| Chemistry | a branch of physical science that studies the composition, structure, properties and change of matter. |
| Accuracy | the quality or state of being correct or precise |
| Significant figures | each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit |
| Scientific notation | a method of writing or displaying numbers in terms of a decimal number between 1 and 10, multiplied by a power of 10 |
| Presicion | the quality, condition, or fact of being exact and accurate |
| Mass number | the total number of protons and neutrons in a nucleus |
| Noble gas | any of the gaseous elements pf the periodic table |
| Atomic number | the mass of an atom of a chemical element expressed in atomic mass units |
| Qualitive | relating to, measuring, or measured by the quality of something rather than its quantity |
| Quantitave | relating to, measuring, or measured by the quantity of something rather than its quality |
| Nuclear fusion | a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy |
| Metalloid | an element whose properties are intermediate between those of metals and solid nonmetals |
| Precitate | cause to happen suddenly, unexpectedly, or prematurely |
| Atom | the basic unit of a chemical element |
| Density | the degree of compactness of a substance |
| Isotope | each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei |
| Specific heat | the heat required to raise the temperature of the unit mass of a given substance by a given amount |
| Electron cloud | the area on which electrons go around the atom |
| Present error | a measure of how innaccurate a measurement is |