Question |
Answer |
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 |