Atomic Theory II | Chemistry | Quiz

Ions are:

neutrons

protons

electrons

charged atoms
Isotopes are atoms of the same element with:

different atomic numbers

different numbers of neutrons

different numbers of protons

different numbers of electrons
The atomic number is the same in different isotopes of the same element:

true

false
Which part of Dalton's original atomic theory must be modified with the discovery of isotopes?

Compounds are formed when elements enter into chemical reactions

Atoms combine with other atoms in whole number ratios to form compounds

Matter is composed of atoms

All atoms of a given element are identical
Who was the person to propose the theory of atomic structure based on line spectra?

Ernest Rutherford

John Dalton

Niels Bohr

James Chadwick
The distinct pattern of colors emitted by excited atoms is called:

a rainbow

continuous spectra

cathode rays

line spectra
Under Bohr's theory of line spectra, the energy in atoms is:

quantized

continuous

zero

infinite
When an electron is excited, the electron's "distance" from the nucleus:

cannot be predicted

decreases

increases

stays the same
In the normal or "ground" state, all of the electrons in an atom are:

not moving

in the nucleus

in the lowest possible electron shells

in the highest possible energy shells
The maximum number of electrons that may reside in the first energy level is:

eight

three

two

thirteen
How many electron volts are required to make hydrogen's electron "jump" from energy level 1 to level 3?

0.7 eV

12.1 eV

10.2 eV

1.9 eV
The existence of line spectra can be explained by:

electrons "jumping" and "falling" to and from specific orbitals

the unique colors of atoms

the unique properties of neon lights

atoms crashing into prisms