Inflated balloon could be described as a SOLID with a GAS inside
Empty bottle could be described as a SOLID with a GAS inside.
Steam is water in the gas phase, which is formed when water boils. Steam is invisible;
however, "steam" often refers to wet steam, the visible mist or aerosol of water
droplets formed as this water vapour condenses.
Empty can of coke could be described as a SOLID with a GAS inside