Quiz on Electrons in Atoms

What is the smallest particle of an element that retains all the properties of that element?

• Molecule

• Atom

• Electron

• Proton

What did Max Planck conclude about matter and energy?

• Matter can gain or lose energy in any amount.

• Matter can gain or lose energy only in small, specific amounts called quanta.

• Matter can only gain energy, not lose it.

• Matter can lose energy continuously.

According to Niel Bohr, what is the lowest allowable energy state of an atom called?

• Excited state

• Quantum state

• Ground state

• Neutral state

What happens when an atom gains energy?

• It remains in the ground state.

• It moves to an excited state.

• It loses electrons.

• It becomes a different element.

According to Bohr's model, how do electrons move around the nucleus?

• In random paths

• In only certain allowed circular orbits

• In a straight line

• In elliptical orbits

What did Bohr assign to each orbit in an atom?

• A letter represented by m

• A number represented by the letter n

• A symbol represented by the letter p

• A color represented by the letter q

What did Erwin Schrodinger propose about electrons?

• Electrons behave like particles

• Electrons behave like waves

• Electrons are stationary

• Electrons have no energy levels

Tags

NGSS.HS-PS4-3

What is the wave function's role in Schrodinger's model and what is this area called?

• It predicts the electron's speed, nucleus

• It predicts a 3D region around the nucleus, atomic cloud

• It predicts the atom's color and wavelength , atomic cloud

• It predicts the atom's mass, nucleus

Tags

NGSS.HS-PS4-3

What is a principal energy level in an atom?

• A level where energy is highest

• A level where energy is lowest

• A level or shell where electrons orbit the nucleus

• A level where protons are found

Tags

NGSS.HS-PS1-1

How many principal energy levels are there ?

• 5

• 6

• 7

• 8