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 |