An ideal gas would have zero volume at zero kelvin. This is an idealization, and it won't happen with a real gas. Also, real substances can't be cooled down to zero kelvin.
No, nothing can have a negative volume. No such thing.
Yes, particles in a gas can be compressed into a smaller volume by reducing the space between them. This will increase the pressure of the gas as the particles are forced closer together.
Yes, a gas has mass because its molecules have mass. A gas also has volume, although this volume can change based on the conditions it is in. A gas can exist in different states (solid, liquid, gas) depending on its temperature and pressure.
Yes, the volume of air can change based on factors such as temperature, pressure, and the presence of other gases. When air is heated, it expands and its volume increases. Conversely, when air is cooled, it contracts and its volume decreases.
Gas cannot be weighed in the traditional sense because it is a form of matter that does not have a fixed volume or mass. Instead, gas is typically measured by its volume or pressure.
According to the ideal gas law, the volume of individual gas particles is assumed to be zero. Of course, this isn't possible; all matter has volume. However, if we assume they have zero volume (along with collisions which are 100% elastic and statistically random motion) it makes the math a lot easier.
Yes, Liquid -Liquid displacement is easier than displacement with gas. the liquids cannot be compressible, but gas can. the volume of gas required for displacement is lower than volume of liquid.
Yes and yes.
Yes.
Yes.
Yes, a real gas has volume because its particles occupy physical space. Unlike an ideal gas, which is assumed to have no volume and incompressible point particles, real gases have finite molecular sizes and experience intermolecular interactions that result in volume occupancy.
Yes, though the volume isn't fixed. It has he volume and shape of its container.
Yes - but sometimes its hard to determine exactly.
No, nothing can have a negative volume. No such thing.
Yes, liquid is more condensed than gas because the particles in a liquid are closer together compared to a gas where particles are more spread out. This is why liquids have a definite volume, whereas gases take the shape of their container.
Yes, one is greater than zero.
Yes. Air is a gas, gasses are fluids, and fluids have volume.