Gas

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/gas

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 stellar fuel?Hydrogen
2. What is the key gas for fertilizers?Ammonia (NH3), synthesized from hydrogen and nitrogen
3. Why can’t we see gases?Because the molecules are so spread out and move fast, they don’t block light the way solids or liquids do. That’s why air and other gases look invisible.
4. How do gas molecules behave differently from solids and liquids?In a solid, particles are packed tightly and only vibrate. In a liquid, they’re close but can slide past each other. In a gas, the particles are far apart and move randomly at high speeds.

Kinetic Theory: A model explaining gas properties based on the motion of its molecules.
Thermodynamics: The branch of physics dealing with heat, work, and energy transformations.
Plasma: An ionized gas consisting of ions and electrons, often considered the fourth state of matter.