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the atom
vocab
Question | Answer |
---|---|
atom | the smallest particle that can that can still be considered an element |
electrons | negatively charged particles |
nucleus | the center of an atom |
proton | the positively charged particle in the |
energy level | a region of an atom in which electrons of the same energy are likely to e found |
neutron | a small particle in the nucleus of the atom, with no electrical charge |
atomic number | the number of protons in the nucleus of an atom |
isotopes | an atom with the same number of protons and a different number of neutrons from other atoms of the same element |
mass number | the sum of protons and neutrons in the nucleus of an atom |
atomic mass | the average mass of all the isotopes of and element |
periodic table | an arrangement of the element showing the repeating pattern of there properties |
chemical symbol | a one or two letter representation of an element |
periods | a horizontal row of elements in the periodic table |
group | elements in the same vertical column of the periodic table, also called family |