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The average kinetic energy of particles in a substance |
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The temperature at which a solid begins to liquefy. |
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The process of changing a liquid to a gas.
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Vaporization which happens at the surface of a liquid below the boiling point of that liquid. |
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A process which a liquid enters the gaseous state. It occurs throughout a liquid at a specific temperurature. |
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| Melting and freezing point of water |
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Most common state of matter in the universe consisting of positively and negatively charged particles. This state is found in all stars (sun), lightning bolts, neon and fluorescent lights and auroras. |
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The faster the movement of the particles, the higher the _____. |
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| The particles have the strongest intermolecular forces. |
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| Volume and shape are definite. Particles ____ in fixed postion. |
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Graphs that show the phase changes that occur as a specific substance is heated.
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When a material changes from one state of matter to another. |
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Heat is the transfer of this from an object at a higher temperature to an object at a lower temperature. |
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State with a definite volume but not a definte shape. |
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| The particles in a liquid are moving past each other and have enough _______to overcome the attractive forces. |
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| Does not have a definite volume or shape. |
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Processes of vaporization |
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The process where a solid changes directly to a gas without first becoming a liquid.
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The process of a gas or vapor becoming a liquid.
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The water vapor that condenses on blades of grass or a car forms liquid droplets.
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When a layer of air near the ground cools, water vapor in the air condenses. |
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Some substances can change directly into a solid without first forming a liquid. An example is the formation of snowflakes forming when water vapor changes directly to ice crystals. |
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Removing this from the water, the molecules lose kinetic energy and slow down. |
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The temperature where a liquid is converted into a solid. |
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| 100 degrees celsius or 212 Fahrenheit |
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