Krypton

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/krypton

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. Who discovered Krypton?Discovered in 1898 by Sir William Ramsay and Morris Travers
2. What is the element symbol?Kr
3. What is the atomic number?36
4. What is Krypton and why is it called the hidden gas?Krypton is a special gas that is invisible and has no smell. It is called the hidden gas because it was found only in tiny amounts in the air, so it was hard to see.
5. How does Krypton help make lights brighter?When an electric current passes through Krypton, it glows in many colors. This glow is used in fluorescent lamps and makes the light brighter and nicer.

Noble Gas: A group of chemically inert gaseous elements with a full valence electron shell, including Helium, Neon, Argon, Krypton, Xenon, and Radon.
Spectral Lines: Discrete wavelengths of electromagnetic radiation emitted or absorbed by an atom or molecule, characteristic of the element or compound.
Isotope: Atoms of the same element that have different numbers of neutrons, resulting in different atomic masses.
Metrology: The scientific study of measurement, including its theory, practice, and application.