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What is colder - liquid nitrogen or liquid heluim?
Liquid helium is a lot colder than liquid nitrogen.
What does heluim neon and hydrogen have in common?
Helium, neon, and hydrogen are all gases at standard temperature and pressure.
How many protons does heluim have?
Heluim is a gas, used for filling up balloons and is also found in space
What can be separated by a chemical change?
Intramolecular bonds (such as ionic or covalent bonds) can be broken down by a chemical change.
How is the average density of a heluim balloon be changed to make it rise float at a constant level and sink?
you would have to deacrease the density. By doing so, you can float. I don't know bout constant level, but because the air in the balloon is more dense than outside air, the balloon will sink in air. p.s. i know you s.j.v students are probably reading this :)
What family does heluim belong to?
Heluim belongs to a group of elements called the noble gases
What is the heluim symbol?
He
Is heluim a mixture?
No.
What does heluim smell like?
gas
Is air heavier than heluim?
Yes
What do heluim and air have in common?
Both are gases.
What is the chemical symbol for Heluim?
The chemical symbol for Helium is He
What chemical element is considered to be a noble gas?
heluim
What is the chemical formula for heluim?
The Chemical Formula for Helium is He.
Why is helium present in radioactive minerals?
heluim are 4 nucleide
Is heluim-4 nuclei a gamma ray?
no, it is an alpha particle.
What is the sun primarily composed of?
50% heluim and 50% hydrogen
