Vocabulary and Key Question Review

 Click Slide Show  Click From Current Slide  Read these directions then click.  For each slide the definition or clues to the vocabulary word will show up  Click once more AFTER you’ve read the definition and guessed the word you think is being defined.  Key Questions at the end are from memory, no answer included. Use your book to check your answers.

 No definite shape  No definite volume  Particles move very fast and free to go where they want

 No definite shape  Definite volume  Can flow  Particles are free to move from place to place

 Definite shape  Definite volume  Particles are in a fixed position and packed close together.

 Particles are arranged in a regular, repeated pattern  Has a specific, or distinct, melting point

 Particles not arranged in a repeated pattern  Does not have a specific, or distinct, melting point  Glass and rubber are examples of this type of solid

 The liquid molecules have an inward pull or force that brings them closer together on the surface

 This is another name for a liquid  “substance that flows”

 The force of a gas’s outward push divided by the area of the walls of the container  Measured in Newton’s/meter squared …N/m 2  Measured in Pascals, Pa  1 N/m 2 = 1 Pa

 A liquid’s resistance to flowing

 Change in state from a solid to a liquid  The solid is gaining thermal energy

 The temperature when melting occurs  Specific for different substances  Table salt is solid at room temperature but mercury is not because each have a different ___________ _____________.

 The change from a liquid to a solid  The particles are losing thermal energy

 The change in state from a liquid to a gas  Evaporation and boiling are two examples of vaporization

 when vaporization takes place only on the surface of a liquid

 When vaporization takes place both below and at the surface level of a liquid  Hint: You do this to water to cook pasta

 The temperature at which a liquid boils

 The change in state from a gas to a liquid  You can see this process happen on your mirror after a shower or the dew on the grass in the morning

 Occurs when the particles on the surface of a solid gain enough energy to form a gas.  Skips the liquid state  Examples: solid air freshener, dry ice

 This principle states that when the temperature of a gas at constant pressure is increased, its volume increases. The same principle is applied to if the temperature is decreased, the volume is decreased. Example:  Temperature  Pressure same  Volume

 When a graph of two variables form a straight line.  When the temperature and volume both increase  Charles’s Law demonstrates this

 This principle states that when the pressure of a gas at constant temperature is increased, its volume decreases. The same principle is applied to if the pressure is decreased, the volume is increased. Example:  Temperature same  Pressure  Volume

 When two variables do the opposite thing  Boyle’s Law demonstrates this Example: If the pressure increases, the volume decreases

 How do you describe a solid?  How do you describe a liquid?  How do you describe a gas?  What happens to the particles of a solid as it melts?  What happens to the particles of a liquid as it vaporizes?  What happens to the particles of a solid as it sublimes?  How are the pressure and temperature of a gas related?  How are volume and temperature of a gas related?  How are pressure and volume of a gas related? *Bonus*: Show someone you know this video. Now describe to him/her what change of state is happening inside the water heater. Describe to him/her how the temperature, volume, and pressure are related to cause the outcome.video