what is between the helium particles in a helium filled balloon?
To understand what is between the helium particles in a helium-filled balloon, we need to consider the nature of gases and how they behave.
In a helium-filled balloon, the gas particles consist of individual helium atoms. These atoms are very small and constantly in motion, randomly moving and bouncing off each other and the walls of the balloon. However, most of the space in the balloon is actually occupied by empty space or what we call "interparticle space."
Between the helium particles, there is a significant amount of empty space. This is because gas particles are not tightly packed together like in solids or liquids. Instead, they are spread out and move freely in all directions.
In terms of density, helium gas is much lighter than air. When filled with helium, the balloon rises because the helium gas is less dense than the surrounding air. The helium atoms are lighter than the molecules in the air, which allows the balloon to float.
So, to summarize, between the helium particles in a helium-filled balloon, there is a considerable amount of empty space, which accounts for the low density of the gas.