science quiz (atoms) Flashcards
(19 cards)
what is a proton
positively charged particle
where is a proton located
inside the nucleus
what other particle has the same mass as a proton
neutron
what is an electron
negatively charged particle
where are electrons located
floating around nucleus
how do energy levels of electrons change
by absorbing a certain amount of quantoms
what is a neutron
a particle with no electric charge
where are neutrons located
inside the nucleus
what is the size of a nucleus
small
what takes up most of the atoms mass
nucleus
what takes up most of the atoms volume
electrons
what are the 3 subatomic particles
neutrons, protons, electrons
what is a subatomic particle
a particle that is smaller than an atom
what is an atom
the smallest unit of an element
what makes up matter
atoms
how many electrons can fit in the 4 orbits
the first can fit 2, the rest can fit 8
what subatomic particles have the same amount as the atomic number
protons and electrons
how do you find the number of neutrons
atomic mass minus atomic number
what is a nucleus
positively charged center of an atom
