1. gas is definitely no shape is the volume. The changes follow the packing container. 2. If the gas in the container to change the volume. The volume of a gas depends on temperature, pressure and the number of moles.3. the substance is a gas with a density less than when it is in a very solid and liquid state.4. gas can spread, and spread quickly. 5. any two or more gas when I put gas in the same container to spread mixture completely. 6. most of the gas that has no color and put some color, but the gas.
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