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chapter 1 lesson 2

atoms and molcues

QuestionAnswer
opposite of part whole
opposite of substance mixture
opposite of positive negative
opposite of proton electron
opposite of heterogeneous homogeneous
opposite of individual multiple
opposite of solvent solute
opposite of element compound
opposite of bond detach
positively charged particle in the nucleus of an atom proton
region surrounding an atom's nucleus where one or more electrons are often found electron cloud
negatively charged particle that occupies the space in an atom outside the nucleus electron
one or more atoms of an element having the same number of protons but a different number of neutrons isotope
region at center of an atom that contains most of the mass of an atom nucleus
an atom that has a charge because it has gained or lost electrons ion
the number of protons in the nucleus of an atom of an element atomic number
uncharged particle in the nucleus of an atom neutron
the nucleus of an atom contains ______________ and neutrons protons
the nucleus has a _____________ and the __________ of the atom positive charge and most mass
an electron is ___________ particle located outside the nucleus negatively charged
the modern model of an atom is called the _______ model electron-cloud
electrons that are close to the nucleus have _______ than electrons that are farther from the nucleus less energy
to atomic number is the number of ________ in the nucleus of an atom of an element proton
isotopes have the same number of protons but different numbers of _________ neutrons
an ion has charge because it has gained or lost __________ electrons
a ________ ion has more protons than electrons positive
adding an __________ to a neutral atom produces a new element proton
which particle in an atom has a positive charge proton
which particle in an atom has no charge neutron
which particle in an atom has a negative charge electron
where is most if the mass of an atom found nucleus
the _______________ is the number of protons in the nucleus of an atom of an element atomic number
you can identify an element if you know its atomic number or _______________ the number of protons
in the periodic table, the atomic number of an element is the __________ above its symbol whole number
Created by: carreali2911