click below
click below
Normal Size Small Size show me how
chapter 4 vocab
vocab
Term | Definition |
---|---|
nucleus | a dense, positively charged mass located in the center of the atom |
proton | a positively charged subatomic, particles that are found in the nucleus of an atom |
electron | a negatively charged subatomic particles that are found in the space outside of the nucleus |
nuetron | a neutral subatomic particles that are found in the nucleus of an atom |
atomic number | an element equal the number of protons in an atom of that element |
mass number | an atom is the sum of the protons and neutrons in the nucleus of that atom |
isotopes | atoms of the same element that have different numbers of neutrons and different mass numbers |
energy level | the possible energies that electrons in an atom can have |
electron cloud | a visual model of the most likely locations for electrons in an atom |
orbital | a region of space around the nucleus where an electron is likely to be found |
electron configuration | the arrangement of electrons on the orbital of an atom |
ground state | when all the electrons in an atom have the lowest possible energies, the atom is said to be |