1st semester final review #4: Atomic Theory/Waves/Isotopes

Whose series of experiments identified the nucleus of the atom?

• Rutherford

• Dalton

• Thompson

• Bohr

Tags

NGSS.HS-PS1-8

A nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a(n)...

• nuclide

• neutron

• electron

• isotope

Tags

NGSS.HS-PS1-8

Isotopes are atoms of the same element that have different...

• principal chemical properties

• masses

• numbers of protons

• numbers of electrons

Tags

NGSS.HS-PS1-8

The atomic number of oxygen, 8, indicates that there are eight

• protons in the nucleus of an oxygen atom.

• oxygen nuclides.

• neutrons outside the oxygen atom's nucleus

• energy levels in the oxygen atom's nucleus

Tags

NGSS.MS-PS1-1

The total number of protons and neutrons in the nucleus of an atom is its

• atomic number

• Avogadro's number

• mass number

The atomic mass of an element listed in the periodic table is the

• average atomic mass

• relative atomic mass of the most abundant isotope

• relative atomic mass of the most abundant radioactive isotope

• mass number of hte least abundant isotope

An aluminum isotope consists of 13 protons, 13 electrons and 14 neutrons. Its mass number is

• 13

• 14

• 27

• 40

The distance between two successive peaks on adjacent wave is its

• frequency

• wavelength

• quantum number

• velocity

Tags

NGSS.HS-PS4-1

A line spectrum is produced...

• when an electron goes from its ground state to its excited state

• when an electron moves from its excited state to its ground state

• when an electron moves into the nucleus

• when an electron moves to another position in the same sublevel

Tags

NGSS.HS-PS4-3

If electrons in an atom have the lowest possible energies, the atom is in the

• ground state

• inert state

• excited state

• radiation - emitting state