Emission Spectra

What is the cause of atomic spectra? Changes in the energy of ______________.

• protons

• neutrons

• elctrons

• positron

Tags

NGSS.HS-PS1-4

NGSS.HS-PS4-3

What should happen to an electron for it to move from a higher energy level to a lower energy level?

• Absorb Energy

• Release Energy

• Merge with a proton

• Displace a neutron

Tags

NGSS.HS-PS1-1

Who was the Danish physicist who explained how different elements emit different spectral colors?

• James Chadwick

• Neils Bohr

• J.J. Thomson

• John Dalton

Tags

NGSS.HS-PS4-3

What was the model used to explain the phenomena described in the emission of different spectral colors?

• Plum Pudding Model

• Nuclear Model

• Solid Sphere Model

• Hydrogen Atom Model

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What is the primary application of emission spectra in chemical analysis?

• Measuring the boiling point of substances

• Identifying unknown elements in a sample

• Determining the pH of a solution

• Calculating the molar mass of compounds

What is the primary application of emission spectra in astronomy?

• Measuring the temperature of stars

• Identifying the chemical composition of stars

• Calculating the distance to stars

• Determining the age of stars

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Sodium

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which element is most likely to be identified by its bright red emission line in its spectrum?

• Sodium

• Hydrogen

• Helium

• Neon

Tags

NGSS.HS-PS4-3

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

• electrons

• protons

• neutrons

Tags

NGSS.HS-PS1-2

Which of the following is a common use of emission spectra in laboratories?

• Determining the mass of a sample

• Identifying elements in a sample

• Measuring the volume of a liquid

• Calculating the density of a solid

Tags

NGSS.HS-PS4-1