Nuclear magnetic resonance

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/nuclear-magnetic-resonance

1. What is the primary applications?
2. What are the tiny spinning tops inside atoms that help scientists learn about molecules?
3. How does a strong magnetic field help NMR work?

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary applications?Molecular structure determination (spectroscopy), medical imaging (MRI), materials science, and biochemistry
2. What are the tiny spinning tops inside atoms that help scientists learn about molecules?They are nuclei that have a property called spin. When they are in a magnetic field, they act like tiny magnets and can absorb and emit radio waves that tell us about the molecule.
3. How does a strong magnetic field help NMR work?The magnetic field makes the nuclear spins line up either with or against the field, creating two energy levels. The difference between these levels depends on the field strength.

Nuclear Spin: An intrinsic quantum mechanical property of atomic nuclei, analogous to angular momentum, which gives them a magnetic moment.
Larmor Frequency: The characteristic frequency at which nuclear spins precess in a magnetic field, dependent on the field strength and gyromagnetic ratio.
Chemical Shift: The slight variation in resonance frequency of a nucleus due to its local electronic environment, providing structural information.