Each element on the periodic table can be identified by its

• classification as a solid, liquid or gas.

• location on the table.

• ability to react to form compounds.

• unique spectral "fingerprint."

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NGSS.HS-PS1-1

What subatomic particle is responsible for the spectral lines seen in emission spectra diagrams?

• electrons

• protons

• neutrons

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

In order to go from ground state to an excited state, an electron must

• emit energy

• absorb energy

• wiggle

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NGSS.HS-PS1-4

When an electron returns to ground state from an excited state, the atom will

• emit energy in the form of light

• absorb energy

• spin, spin, spin

• wiggle

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NGSS.HS-PS4-3

For an electron to change from ground state to an excited stated it must...

• Absorb energy
• Release energy

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NGSS.HS-PS1-4

If an electron moves from n=4 to n=2 it ____

• absorbs energy, often in the form of light.

• releases energy, often in the form of light.

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NGSS.HS-PS1-2

NGSS.HS-PS4-3

In which state does an electron have the least amount of energy?

• Excited state

• Ground state

• Orbital

• Bohr model

Line emission spectrum shown below happens when

• Electronstransition from lower to higher energy levels.

• Electron transition from higher to lower energy levels.

• Electrons exist in fixed energy states

• Electrons transition between different energy levels.

Tags

NGSS.HS-PS4-3

Which elements are in the unknown sample?

• A and B
• B and C
• A and D
• B and D

Tags

NGSS.HS-PS1-1

Which element(s) is/are found in the star's spectra below?

• Hydrogen only

• Hydrogen & Helium

• Calcium only

• Hydrogen & Calcium