Explanation:
Use the particle model of matter to explain why solids have a fixed shape, but gases fill the shape of the container they are in. ... The particles in a gas have very large spaces between them, so the particles can be 'squashed' closer together, meaning the gas can easily be compressed to take up a smaller volume.
Could you add the answer choices?
Some of the factors that affect the rate at which particles diffuse include: the particle's molecular weight, temperature, concentration difference, diffusion distance, permeability and surface area. Pressure is also known to affect the rate of diffusion since it increases the speed of molecules. Hope this helps!
Most of the gas about 72 percent is hydrogen. Nuclear fusion converts hydrogen<span> into other elements. The sun is also composed of about 26 percent </span>helium<span> and trace amounts of other elements </span>oxygen<span>, carbon, </span>neon<span>, </span>nitrogen,magnesium<span>, iron and silicon.</span>
