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chapter 17 vocab
Question | Answer |
---|---|
the smallest particle of an element hat still retains the properties of the element. | atom |
number of protons in an atoms nucleus. | atomic number |
weighted-average mass of the mixture of an elements isotope. | average atomic mass |
particles surrounding the center of an atom that have a positive charge on 1 - negative... | electron |
dots represent the number of electrons. | electron dot diagram |
vertical columns on the periodic table. | group |
atoms of the same element that have different numbers of neutrons. | isotope |
sum of the number of protons and neutrons. | mass number |
neutral particle,composed of quarks,inside the nucleus of an atom. | neutron |
postively charged center of an atom that contains protons and neutrons. | nucleus |
horizonal rows on periodic table. | period |
organized table containing all known elements. | periodic table |
1+ positive.... | proton |
makes up protons and neutrons | quark |
area around the nucleus. | electron cloud |