q1 ..Whar are the conditions for something be called matter? q2...why do gases neither have fixed volume nor fixed shape? q3...how does smell of food being cooked in kitchen reaches us even from considerable distance? q4....explain why does diffusion occurs quickly in gases than in liquid
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1.conditions required for being a matter are anything that occupy space and have mass and volume
2. Gas is a fluid which can be easily compressed,molecules are far apart and there is nil force of attraction.If you keep a gas in a container the particles will collide with each other or with the wall of the container and they can occupy any space available to them.Thus they do not have a fixed shape or volume.
3.At higher temperatures the particles of gas moves faster as the kinetic energy increases with increase in temperature .So the smell (vapour particles) of hot cooked food reaches us.
4. The spaces between the constituent particles in gases are higher than in liquids. Thus, the particles in gases possess higher kinetic energy and move with higher speeds. Because of this, diffusion is faster in gases than in liquids.
2. Gas is a fluid which can be easily compressed,molecules are far apart and there is nil force of attraction.If you keep a gas in a container the particles will collide with each other or with the wall of the container and they can occupy any space available to them.Thus they do not have a fixed shape or volume.
3.At higher temperatures the particles of gas moves faster as the kinetic energy increases with increase in temperature .So the smell (vapour particles) of hot cooked food reaches us.
4. The spaces between the constituent particles in gases are higher than in liquids. Thus, the particles in gases possess higher kinetic energy and move with higher speeds. Because of this, diffusion is faster in gases than in liquids.
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