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Unit 1 Vocab.
Chemistry Unit 1 Vocabulary
Term | Definition |
---|---|
Chemistry | a science that deals with the structure and 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 | the figure of 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 |