Flame Test

What is the color of the light that copper compounds give off?

• Green

• Red

• Violet

• Yellow-orange

Why do you think are there different colors emitted?

• Because of the absorption of heat from the flame

• Because heat is released

• Because of the absorption of light

• each element has a different number of electrons

Tags

NGSS.HS-PS1-1

What is the state when electrons move to a higher energy level upon absorption of energy?

• active

• inactive

• excited

• ground

What compound gives off bright red color when heated over a flame?

• Lithium

• Calcium

• Strontium

• Potassium

What particles in the heated compounds are responsible for the production of the colored light?

• proton

• neutron

• electron

• proton and neutron

What is the color of the light that sodium compounds give off?

• Yellow

• Orange

• Blue-green

• Purple

When is light emitted in the flame test

• when the electrons move from the ground state to the excited state

• when the electrons move from the excited state to the ground state

• when the prontons move from the ground state to the excited state

• when the protons move from the excited state to the ground state

Tags

NGSS.HS-PS1-4

NGSS.HS-PS4-3

Which electron configuration represents a excited state for sodium?

• 1s²2s²2p⁶3s¹

• 1s²2s²2p⁶3s²

• 1s²2s²2p⁵3s²

• 1s²2s²2p⁶

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which electron configuration represents the sodium ion

• 1s²2s²2p⁶3s¹

• 1s²2s²2p⁶3s²

• 1s²2s²2p⁵3s²

• 1s²2s²2p⁶

Tags

NGSS.HS-PS1-1