Helium Flashcards
What is Helium?
Helium is the second simplest and second lightest element, right after hydrogen.
Its symbol is He, and its atomic number is 2 on the periodic table.
What are the subatomic particles in a Helium atom?
Helium has two protons, two neutrons, and two electrons.
Where is Helium commonly found?
Helium is rare on Earth but common in the universe.
It’s created in stars when hydrogen atoms fuse together.
How is Helium found on Earth?
It is found trapped deep underground, mixed with natural gas.
What does Helium look like?
Helium is invisible, tasteless, and has no smell.
Why do helium balloons float?
Helium is very light, even lighter than air.
List three important uses of Helium.
- Party balloons
- Breathing mixtures for scuba divers
- Cooling MRI machines
What is a unique property of Helium?
Helium stays a gas even at extremely cold temperatures.
Is Helium flammable?
No, Helium is non-flammable.
Where was Helium first discovered?
Helium was discovered in the Sun before it was found on Earth.
What happens if you breathe in Helium?
It makes your voice sound funny and squeaky.
Why doesn’t Helium stay on Earth?
Helium is super light, so it floats up and escapes into space.
How is Helium important for space exploration?
It cools rocket engines.
What are scientists using Helium for in experiments?
Scientists are using helium for super-cold experiments to explore new materials and technologies.
Fill in the blank: Helium is like the universe’s fun, helpful, and ______ gas.
chill
