click below
click below
Normal Size Small Size show me how
Chemistry - Unit 1
Term | Definition |
---|---|
Chemistry | A science that deals with the structure and properties |
Noble Gas | Group 18 in the periodic table with a fuller outer shell |
Atomic Number | Number of protons in the nucleus in an atom |
Nuclear Fusion | Reaction in which the nuclei of one atom combines that combines with the nuclei of another to form a larger nuclei |
Isotope | Atoms with the 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 the neutrons in the nucleus of a atom |
Electron Cloud | Systems 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 number |
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 temperature of the mass of a given substance by any amount |
Precipitate | A solid that is produced by a chemical reaction in solution |
Ion | Atom that has gained or lost one or more electrons |