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Unit One
Term | Definition |
---|---|
Chemistry | A science that deals with the structure and its properties. |
Noble Gas | Group 18 in the periodic table with a full outer shell. |
Atomic Number | Number of protons in the nucleus in an atom. |
Nuclear Fusion | Reaction in which the nuclei of one atom combines with the nuclei of another to form a larger nuclei. |
Isotope | Atoms with same number of protons but not the same number of neutrons. |
Significant Figure | a number that express a magnitude to a specified degree of accuracy. |
Density | Mass per unit of volume. |
Metalloid | Element with the properties of both metals and nonmetals. |
Mass Number | Sum of the protons and neutrons in the nucleus of an atom. |
Electron Cloud | System of electrons surrounding the nucleus of an atom. |
Atom | Smallest particle of a substance that can exist by itself. |
Precision | The quality of being exact. |
Accuracy | The ability to work without mistakes. |
Scientific Notation | Method that expresses the number multiplied by 10 and the appropriate power. |
Percent Error | Experimental value minus the accepted value, divided by the accepted value and then multiplied by 100. |
Quantitative Data | Numerical measurements rather than its words. |
Qualitative Data | Data in words rather than in numbers. |
Specific Heat | The heat required to raise the temperature of the mass of a given substance by given amount. |
Precipitate | A solid that is produced by a chemical reaction in solution. |