Bohr Model

What gases are in the unknown mixture?

• Gas B & Gas D

• Gas C & Gas B

• Gas A & Gas D

• Gas D & Gas C

Tags

NGSS.MS-PS1-2

Flame tests can be used to identify an element. Each element emits characteristic waves of light when it is heated in a flame. What describes how the light is produced?

• Protons in the ground state lose energy and give off light.

• Protons in the ground state gain energy and are emitted from the nucleus, giving off light.

• Electrons in the ground state lose energy and move to an excited state, giving off light.

• Electrons in the ground state gain energy, move to an excited state, and give off light when they return to the ground state.

Tags

NGSS.HS-PS4-3

When an electron absorbs enough energy, it jumps up to a higher level. This is called

• absorption state

• excitation state

• emission state

• relaxation state

According to Bohr, the energy absorbed by an electron upon excitation comes in a fixed amount called

• exact energy

• fixed energy

• quantized energy

• None of the above

Letter A is showing

• Neutrons

• Electrons

• Protons

• Nucleus

Tags

NGSS.MS-PS1-1

What subatomic particle is found in the electron cloud?

• Neutrons

• Electrons

• Protons

• none

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

How many electrons can go in the Second energy level?

• 2

• 8

• 18

• 32

In the Bohr model of the atom, electrons are said to move in specific circular paths around the nucleus. What are these paths called?

• Orbits

• Orbitals

• Shells

• Clouds