smallest particle that can still be considered an element

negatively charged particles

atoms have negatively charged particles _

what is an example of electrons in an atom?

dense center

positively charged particle

positively charged particles are found in the _

electrons move in _ orbits

each electron orbit has a _ energy

protons are:

electrons are:

neutrons are:

number of protons in an atom of an element

atoms of different elements have _ numbers of protons

because an atom is _ the atomic # also equals the number of electrons

the sum of protons and neutrons in an atom

atoms of the same element that have different numbers of neutrons and different mass numbers

isotopes of an element have the same atomic # but _ mass #’s because they have different #’s of neutrons

who discovered neutrons and who discovered protons?

what 2 things can you determine from the atomic number?

true/false? all atoms in the environment are equal

what model did Neil Bohr discover?

what scientist compared electrons in an atom to chocolate chip cookies?

true/false? each electron orbit hasa fixed energy level

who discovered atoms?

what scientist theorized that atoms contained a dense center called a nucleus?

the possible energies that electrons in an atom can have

visual model of the most likely locations for electrons in an atom

region of space around a nucleus where electrons are most likely to be found

electron clouds let us know how electrons _ in their orbitals

an electron in an atom can move from one energy level to another when the atom gains or _ energy

what are the 4 numbers for the rings in a bohr’s model