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Unit 1- Chemistry

TermDefinition
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
Popular Chemistry sets

 

 



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