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Hydrogen is the least dense gas.

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Q: What gas is the most or least dense when heated?
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List 4 things from least dense to most dense?

Hydrogen (gas)Oxygen (gas)PumiceWater (liquid)GraniteSteelLeadGold


In what order from most dense to least with water gas iron rock?

solid, liquid then gas


Is cotton least dense?

'Least' is a comparison word. Compared to iron and lead yes cotton is least dense. Compares to oxygen gas and hydrogen gas, no it is not least dense.


Which type of planets are least dense?

Gas planets are least dense.


What materials are the least dense?

Gas


What planet is the least dense of the gas giants?

Saturn is the least dense of the gas giants, even out of all of the planets in our solar system. Its average density is around 0.7 g/cc (less than water).


What is the most dense state of matter to the least dense including solids liquids gases and plasmas?

The order is: - solid (the densest) - liquid - gas - plasma


What planet is has a big gas giant but the least dense of planet?

Saturn is the least dense planet in our solar system.


Why does heated gas become lighter?

Heated particles are not actually lighter. What happens is that heated particles require more area. This increase in area is observed as an increase in volume. This reduces the number of particle in a given space. This means that the heated air is less dense. Due to buoyancy, things that are less dense "float" on top of denser things. This is why a hot air balloon rises.


Why is it that the least dense of all substances is gas?

The molecules are farther apart in a gas.


When heated bubbles rise to surface?

bubbles rise to the surface of a heated liquid as it changes to gas because they are less dense than the liquid.


The least dense and most energetic of the three states of matter is the?

Gas as the particles move freely of one another.