Atom

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/atom

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. How heavy is Atom?Over 99.94% of mass resides in the nucleus
2. What is the scientific name?Atom
3. What is the fundamental particles?Protons, neutrons (in nucleus), electrons (orbiting)
4. What are atoms?Atoms are like super‑tiny LEGO bricks that make up everything around us. Each one has a small center called a nucleus with protons and neutrons, and a cloud of electrons that surrounds it.
5. How many protons does a sodium atom have?A sodium atom has 11 protons in its nucleus. That number of protons tells us it is the element sodium.

Atomic Number: The count of protons in an atom's nucleus, identifying the element.
Isotope: Atoms of the same element with different numbers of neutrons.
Quantum Mechanics: The physics theory describing nature at the smallest scales.
Orbital: A region around an atom's nucleus where an electron is likely to be found.