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Chem level 1


Chemistry the study of matter
atom the fundamental unit of all mater; composed of protons, neutrons, and electrons
protons one of the three fundamental particles that make atoms. It has an atomic mass of 1 and carries a positive charge
neutrons one of the three fundamental particles that make up atoms. It has an atomic mass of 1 and carries no charge
electrons one of the three fundamental particles that make up atoms; has almost no mass compared to protrons and neutrons, and it carries a negative charge; electrons form the bonds between atoms in molecules
nucleus the central portion of an atom that houses the protons and neutrons
electron cloud the space that surrounds the nucleus of an atom and houses the electrons
helium the second element in the periodic table. It has two protons, two neutrons, and two electrons. one of the noble gases.
elements one of more than 100 fundamental units that make up matter
periodic table of elements a chart categorizing all of the chemical elements
atomic number the number of protons in an atom's nucleus; in the periodic table it appears in the upper left-hand corner near the atomic symbol for the element
atomic weight the combined weight of an atom's protons and neutrons; in the periodic table, it is found below the symbol for the element
carbon the 6th element on the periodic table with 6 protons, 6 neutrons, and 6 electrons; has the symbol C
Oxygen the 8th element in the periodic table; has the symbol O and has 8 protons, 8 electrons, and 8 neutrons
hydrogen the 1st element in the periodic table with the symbol H; It has only 1 proton, 1 electron, no neutrons
sodium 11th element on the periodic table w/ the symbol NA. It has 11 protons, 11electrons, 12 neutrons. Sodium is alkali metal and combines with chlorine to make sodium chloride (table salt)
alkali metals the group of elements in the far left-hand column of the periodic table
noble gases the group of elements on the far right-hand side of the periodic table. These elements do no react easily with other elements.
uranium element #92 in the periodic table w/ the chemical symbol U. uranium has 92 protons, 92 electrons, and 146 neutrons
gold #79 on the periodic table of elements w/ the symbol AU. Gold has 79 protons, 79 electrons,& 118 neutrons
Lead #82 on the periodic table of elements w/ the symbol Pb; has 82 protons, 82 electrons, 125 neutrons
Created by: erikamuhammad



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