# _Ideal Gas Law Gizmo (1).pdf - Student Exploration Ideal...

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Student Exploration: Ideal Gas Law Vocabulary: atmosphere, Avogadro’s law, Boyle’s law, Charles’s law, dependent variable, directly proportional, Gay-Lussac’s law, ideal gas, ideal gas constant, ideal gas law, independent variable, inversely proportional, Kelvin temperature scale, kilopascal, mole, pressure, proportionality, STP, volume Prior Knowledge Questions(Do these BEFORE using the Gizmo.) 1.Why is it often necessary to add air to your car tires during the winter?
2.Why do you think it might be a bad idea to throw an aerosol can into a fire?
herefor a list of logins you can use. Gizmo Warm-up The Ideal Gas LawGizmo shows molecules moving within a chamber fitted with a movable piston. As the piston moves up and down, the volumeof the chamber changes. Since gases expand to fill their container, any changes in the volume of the chamber changes the volume of the gas within. 1.Next to Dependent variable, check that Volumeis selected. Using the green slider, change the pressure. Note what happens to the temperature, volume, and amount of gas. What changes? What stays the same?
2.Using the purple slider on the tank of gas, adjust the number of moles, or amount of gas. What changes?
What stays the same?
3.Now make Pressurethe dependent variable. Use the red slider to change the temperature. What changes?
-increasing temp causes the pressure to increase and decreasing the temp causes the pressure to decrease. What stays the same?
Activity A: Get the Gizmo ready: Select Volumeas the dependent variable.
Question: What are some factors that affect the volume of a gas?
A.What do you think will happen to the speed of the molecules if a gas is heated?