# Determining the relationship between the pressure and volume of a confined gas - Boyle's Law

by tmkilani (student)

Session #:

Candidate Name: Thaer Al-Kilani

Supervisor Name: Ban Darwish

1. Design

1. Research Question

How does different volumes (20, 25, 30, 35, 40, 45, 50, 55, 60) ml of a confined gas (air) affect its pressure?

1. Hypothesis

As the volume of a confined gas is decreased, the gas particles will exert more pressure inside the syringe as the particles will collide more frequently with each other and with the syringe. According to Boyle’s law, the relationship between the volume of a confined gas and the pressure it exerts is inversely proportional, for as the volume is halved, the pressure is doubled at a constant temperature.

1. Variables

1. Independent Variable

The independent variable is the Volume of the confined gas (Air) which ranges between 20 ml and 60 ml (20, 25, 30, 35, 40, 45, 50, 55, 60) ml.

1. Dependent Variable

The dependent variable is the pressure exerted by the confined gas (Air) inside the syringe in KPa.

1. Controlled Variables

-        Temperature of the Confined Gas (Air) inside the syringe.

-        Mass of the Confined Gas (Air)

-        Size of the syringe and piston in which the Gas (Air) is confined.

1. Method

1. How to change the independent variable

Applying force to the piston of the Syringe in order to decrease the Volume of the confined gas (Air)

1. How to control Variables

-        Temperature of the Confined Gas (Air) inside the syringe. (Conducting the experiment at Room Temperature)

-        Mass of the Confined Gas (Air)
(Conducting the experiment in the same procedure)

-        Size of the syringe and piston in which the Gas (Air) is confined (Using the same Syringe/Piston for all trials)

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