Background: We discussed earlier some basic principles about the behavior of gases called the kinetic-molecular theory. Among other things, this theory suggests that gas molecules are in constant motion, and the average speed of the individual gas particles is dependent upon temperature – the higher the temperature, the faster the molecules move. It is not just gas particles that are in constant motion. The molecules and ions that make up liquids and solutions are also continually moving in nearly random directions. As a result, molecules and ions in a solution will collide with one another fairly frequently. As with gases, a temperature increase will produce an increase in the average particle speed.

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Were the water molecules in the pot moving or stationary?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: As the water heated did the molecules speed up or slow down??

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: When the water reached boiling were the molecules moving faster or staying at a constant speed?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Were the molecules moving in a pattern or randomly?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Which molecules moved faster room temperature or boiling water ?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Which molecules moved slower room temperature or boiling water ?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Which molecules moved slower room temperature or frozen water ?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Which molecules moved faster room temperature or frozen water ?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Did the room temperture or frozen water have more kinetic energy?

Situation: Beth put water on the stove to boil for making rice. While she was waiting for the water to boil she filled her ice cube trays with water and put them in the freezer. When the water on the stove reached a boil she added her rice and removed it from the heat.

Question: Did the room temperture or boiling water have more kinetic energy?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Where the solution molecules moving or stationary before the heat was appllied?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Did the molecules speed up or slow down when heat was applied to the liquid?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Did the molecules speed up or slow down when heat was removed fromthe liquid?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Did the molecules coliding more or less often when heat was removed from the liquid?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Did the molecules coliding more or less often when heat wasapplied to the liqued the liquid?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Was the kinetic energy increasing or decreasing when heat was applied to the liqued the liquid?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Was the kinetic energy increasing or decreasing when heat was removed from the liquid?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Was the temperature of the liqued increasing or decreasing in the molds?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Was the kinetic energy of the liqued increasing or decreasing in the molds?

Situation: Jane wanted to make a batch of candy so she but some water, sugar, corn syrup and flavoring in a pot. After turning on the heat she stirred the the mixture until until it reached 300 degrees Fahrenheit and began to boil. She then turned of the candy and and poured it into molds.

Question: Were the liqued molecules speeding up or slowing down  in the molds?

Situation: Sue needed to make a simple syrup so she added water and sugar to a pot. She put the pot over a low heat and brought it to a simmer. Sue then removed the syrup from the heat and let it cool.

Question: Did heating the syrup increase or decreas the kinetic energy of the solution?

Situation: Sue needed to make a simple syrup so she added water and sugar to a pot. She put the pot over a low heat and brought it to a simmer. Sue then removed the syrup from the heat and let it cool.

Question: Did removing the syrup from the heat increase or decrease the kinetic energy of the solution?

Situation: Sue needed to make a simple syrup so she added water and sugar to a pot. She put the pot over a low heat and brought it to a simmer. Sue then removed the syrup from the heat and let it cool.

Question: Did the motion of the solutions molecules increase or decrese when heat was added.

Situation: Sue needed to make a simple syrup so she added water and sugar to a pot. She put the pot over a low heat and brought it to a simmer. Sue then removed the syrup from the heat and let it cool.

Question: Did the motion of the solutions molecules increase or decrease when heat was removed

Situation: Sue needed to make a simple syrup so she added water and sugar to a pot. She put the pot over a low heat and brought it to a simmer. Sue then removed the syrup from the heat and let it cool.

Question: Were the solutions molecules colliding or moving away from each other.

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Is the air particles moving faster inside or outside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Is the air particles moving slower inside or outside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Where the air pressure greater inside or outside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Where the air pressure less inside or outside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Is the air hotter or cooler inside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Is the air cooler inside or outside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Are the air particles colliding more frequently inside or outside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Are the air particles colliding less frequently inside or outside the balloon?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Is the kinetic energy of the air increasing or decreasing as the air is heated?

Situation: As Matt prepared for his latest hot air balloon flight he lit the fire beneath the balloon opening and watch as the fabric of the balloon began to expand. Eventually is once flat balloon was fully expanded and ready for flight.

Question: Ar the air particles colliding more or less frequently with the sides of the balloon as the air is heated??

Situation: Beth grabbed her container of chili from he fridge and tossed in the microwave for 4 minutes. However, she forgot to vent the lid and after several minutes the dish exploded spraying chili all over the inside of the microwave.

Question: Was the temperature of the gas increasing or staying constant?

Situation: Beth grabbed her container of chili from he fridge and tossed in the microwave for 4 minutes. However, she forgot to vent the lid and after several minutes the dish exploded spraying chili all over the inside of the microwave.

Question: Was the temperature of the liqued increasing or staying constant?

Situation: Beth grabbed her container of chili from he fridge and tossed in the microwave for 4 minutes. However, she forgot to vent the lid and after several minutes the dish exploded spraying chili all over the inside of the microwave.

Question: Were molecules in the dish colliding more or less frequently than in the fridge