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16 Cards in this Set
- Front
- Back
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_____ the mixing of molecules of one gluid through another by random motion.
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diffusion
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Diffusion can occur with ___ and ____, but not _____.
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liquids and gases, but not solids
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What is one way we know that molecules of matter are moving?
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Because of diffusion
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The ability of molecules of the same type of matter to stick together is known as _____.
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cohesion
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The ability of molecules of different kinds of matter to stick together is known as ___.
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adhesion
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Explain how a drop of water clinging to the faucet is an example of adhesion and cohesion.
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The drop of water is water molecules sticking together and the water clinging to the faucet is an example of two different matters sticking together.
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Cohesion and adhesion are more evident in _____ than in liquids and gases.
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solids
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The tendency of a liquid to act as if it has a thin flim on its surface is known as __ ___.
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surface tension
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Explain surface tension.
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It is the attraction of the surface molecules to the molecules below the surface, causing a stronger bond.
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A ___ is the shape with the smallest surface area.
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sphere
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What does droplets of water not form spheres?
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The pull of gravity flattens them.
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Why does water tend to rise slightly on the edges where the water meets the glass?
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Because of the strong adhesion of water to glass.
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__ ____ is the phenomenon in which liquids in thin tubes rise above their own levels.
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Capillary action
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___ and ___ work together to from capillary action.
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Cohesion and adhesion
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___ ____ of an object is a number which compares that object's density to the density of water.
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Specific gravity
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A device for measuring the specific gravity of liquids is called a ___________.
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hydrometer
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