Question

1. experiment with the simulator to discover how temperature and pressure are related. experiment with all four substances and write “laws” to describe the relationship between temperature and pressure.

control	temperature	pressure	write a “law”
decrease temperature (turn on cool and hold)
increase pressure (press down on lid)
*decrease pressure (pull up on lid)
add particles (press pump10 times)

Explanation:

Step1: Analyze the first - control scenario

When the temperature is increased (turn on heat and hold), both temperature and pressure increase. The relationship is direct - proportional in this case.

Step2: Analyze the second - control scenario

When decreasing temperature (turn on cool and hold), we expect the pressure to decrease as well since in a closed - system for an ideal gas (PV = nRT, when volume and amount of substance are constant, P is proportional to T), the pressure should follow the change in temperature. So the pressure decreases. Law: A decrease in temperature causes a decrease in pressure.

Step3: Analyze the third - control scenario

When increasing pressure (press down on lid), the temperature doesn't directly cause the pressure change here. But if we consider the reverse of the ideal - gas law relationship when we change pressure externally, to keep the gas law in balance (assuming constant volume and amount of substance), the temperature would increase slightly due to the work done on the gas. However, if we are just looking at the direct cause - effect of pressure change on temperature without considering complex thermodynamics for now, we note that this is an external pressure change. Law: An increase in pressure (externally applied) can cause an increase in temperature under certain conditions.

Step4: Analyze the fourth - control scenario

When decreasing pressure (pull up on lid), similar to the above, it's an external pressure change. If we assume constant volume and amount of substance, a decrease in pressure would lead to a decrease in temperature. Law: A decrease in pressure (externally applied) can cause a decrease in temperature under certain conditions.

Step5: Analyze the fifth - control scenario

When adding particles (press pump 10 times), if the volume is constant, the number of moles (n) in PV = nRT increases. If temperature is to be kept constant in an ideal - gas situation, the pressure would increase. But if we consider the heat generated by adding particles (work done in pumping), the temperature might also increase slightly. Law: Adding particles (increasing the amount of substance) can cause an increase in pressure and potentially an increase in temperature.

Answer:

Control	Temperature	Pressure	Write a “Law”
Decrease Temperature (Turn on cool and Hold)	Decreases	Decreases	A decrease in temperature causes a decrease in pressure
Increase Pressure (Press down on lid)	Increases (slightly due to work - done)	Increases	An increase in pressure (externally applied) can cause an increase in temperature under certain conditions
Decrease Pressure (Pull up on lid)	Decreases (slightly)	Decreases	A decrease in pressure (externally applied) can cause a decrease in temperature under certain conditions
Add Particles (Press pump 10 times)	Increases (slightly due to work - done)	Increases	Adding particles (increasing the amount of substance) can cause an increase in pressure and potentially an increase in temperature