The net movement of particles from a region of high concentration to a region of lower concentration due to random movement is the definition of:
diffusion
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Diffusion occurs only in solids True- False
False
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What is a solute? A substance dissolved in another substance - the substance doing the dissolving
A substance dissolved in another substance
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What is a solvent? The one doing the dissolving - The substance dissoved in another substance
The one doing the dissolving
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At the top of a mountain, the air pressure will be ............................. low - high
low
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Which container will have lower pressure? left - right - they both have the same pressure
left
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Pressure can be exerted by solids, liquids and gases. ? TRUE - FALSE
TRUE
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How can we increase the gas pressure inside a sealed container? Increase the number of particles inside the container- Increase the temperature -Decrease the volume of the container -All of these
All of these
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The reason gases can be compressed is because: ? The particles are very close together. - The particles are merely vibrating. - The particles are unable to move.- The particles are very far apart.
The particles are very far apart.
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Cooling a plastic bottle in a freezer will ......................... the air particles inside. speed up - slow down
slow down
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Gas pressure is caused by particles colliding with ............................................. each other only. - the walls of a container.
the walls of a container.
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In what direction(s) does air exert pressure? In all directions - In no direction -there is no pressure
In all directions
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If a hairspray can is heated, what can be expected of the pressure of the gas inside the can? The pressure will increase -The pressure will decrease