Pressure Laws and SI Units

Gas Laws
Name any gas laws you already know

Pressure

Pressure = Force/Area

Pressure in a gas is caused by the collisions of gas molecules with the walls of the container. The molecules are constantly moving in random directions and exert a force when they collide with a wall. Pressure is the result of millions of collisions occurring between the Gas molecules and the wall of the container. Faster the molecules move, the more force they will exert and cause an increase in pressure.

Multiple Choice

Which container will have a lower pressure?

• left

• right

• they both have the same pressure

• I don't know

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Multiple Choice

You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?

• 5 L
• 20 L
• It would stay at 10L
• 1 L

Multiple Choice

A gas is at a pressure of 12 atm, a volume of 23 L, and a temperature of 200K. If the pressure is raised to 14 atm,  and the temperature is increased to 300K. What is the new volume of the gas?

• P1V1/T1 + P2V2/T2
• PV = nRT
• P1V1 = P2V2
• P1/T1 = P2/T2

Multiple Choice

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?

• 0.9 atm

• 2.1 atm

• 1.6 atm

• 3.4 atm

Multiple Select

What are the 3 main thermodynamic properties of gases?

[Select all correct answers]

• Pressure

• Area

• Volume

• Temperature

• Velocity

Multiple Choice

The equation shown is for

• Boyle's Law

• Charles' Law

• Pressure Law

Multiple Choice

The equation shown is for

• Boyle's Law

• Charles' Law

• Pressure Law

Multiple Choice

The equation shown is for

• Boyle's Law

• Charles' Law

• Pressure Law

Multiple Choice

Boyle's Law states

"for a gas at constant temperature, the volume of the gas is directly proportional to pressure of the gas"

• True

• False

Multiple Choice

Charles' Law states

"for a gas at constant pressure, the volume of the gas is directly proportional to temperature of the gas"

• True

• False

Multiple Choice

Pressure Law states

"for a gas at constant pressure, the pressure of the gas is directly proportional to temperature of the gas"

• True

• False

Multiple Select

For the Characteristic Gas Equation, which two parameters are constants?

• Pressure

• Mass

• Volume

• Characteristic gas constant

• Temperature

Multiple Choice

The equation shown is for

• Characteristic Gas Equation

• General Gas Equation

SI Units

Multiple Choice

A system of units of measure widely accepted by the scientific community (SI for short)

• International System of Units

• World Wide Weight

• Science Instruments

• Use These Measures

Multiple Choice

The SI unit for time is the __?__.

• hours (h)

• liter (L)

• gram (g)

• second (s)

Multiple Choice

What SI unit is used to measure length?

• meters

• liters

• centimeters

• kilograms

Multiple Choice

The SI unit for temperature is __?__.

• degree fahrenheit (° F)

• degree celsius (° C)

• kelvin (K)

• degree centigrade (°C)

Multiple Choice

The SI unit for mass is _________.

• Pounds

• Inches

• Kilograms

• Ounces

Multiple Choice

The SI unit for power is

• meters

• mass

• kilograms

• watts

Multiple Choice

Newton meters is an other term for

• Watts

• Joules

• Kilograms

• Seconds

Multiple Choice

SI unit for weight

• Pound

• Liter

• Newton

• Second

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