1.15 Common Units of Pressure

Slides:



Advertisements
Similar presentations
Pressure and Temperature William Thomson “Lord Kelvin”
Advertisements

Kinetic Molecular Theory of Gases and the Gas Laws
Chapter 11: Behavior of Gases
Converting Between Units of Pressure
GASES. Identify the abundances of the naturally occurring gases in the atmosphere. Describe the historical development of the measurement of pressure.
PRESSURE CHEMISTRY MODELING PRESSURE MACRO- SCALE Pressure is the amount of force exerted over a given area The force exerted is caused by particles.
Pressure. The amount of force an object puts on a surface. Pressure is measured by a barometer. Atmospheric pressure comes from air being pulled down.
Gasses Kinetic molecular theory Pressure. Introduction Earth’s atmosphere is a gaseous solution composed of mostly nitrogen and oxygen The atmosphere.
Topic#33: Gas Laws EQ: How do we calculate the relations between the pressure, temperature, and volume of gases?
Gas Laws Units Used With Gas Laws PRESSURE: The force applied by many gas particles colliding with each other. 1.Atmospheres (atm) STP= 1atm 2.Pounds.
Combined Gas Law The combined gas law combines Boyle’s Law and Charles’ Law.
The Properties of Gases. Properties of Gases 1. Gases expand to fill the container. 2. Gases take on the shape of the container. 3. Gases are highly compressible.
Gas Laws Units Used With Gas Laws PRESSURE: The force applied by many gas particles colliding with each other. 1.Atmospheres (atm) STP= 1atm 2.Pounds.
Physical Characteristics of Gases
Gases: Pressure and Manometers
Pressure and Temperature William Thomson “Lord Kelvin”
Gases. Characteristics of Gases Gases are fluids Gases are fluids –In other words, they can flow. Gases have low density Gases have low density –Most.
Pressure and Temperature William Thomson “Lord Kelvin”
The Gas Laws A Tutorial on the Behavior of Gases..
Atmospheres and Conversions: 1.00 atm = x 10 5 Pa = kPa = 760. Torr = 14.7 psi To convert pressure: 1.Turn what you have to atm 2.Multiply.
Gauge pressure Most pressure gauges compare to Atmospheric (i.e. this room is at 0 Gauge) Absolute p is 1 atm more P = P gauge + 1 atm 1 atm = x.
Section 10-2: Pressure Pressure (P): the force per unit area on a surface Pressure = Force / Area Newton (N): SI unit of force.
Chemistry Modeling Pressure Macro-Scale Pressure is the amount of force exerted over a given area The force exerted is caused by particles collisions.
1 Gases Mr. Wally Chemistry. 2 Kinetic Theory of Gases ► Molecules in random motion: strike each other and walls of container. ► Force exerted on walls.
Chapter 5 Gas- matter that has no definite shape or volume, takes both the shape and volume of its container Kinetic Theory of Gases -states that tiny.
Equivalents for the ways to measures of pressure Atmospheres (atm) Millimeters of mercury (mmHg) – Also known as TORR Kilopascals (kPa) 1 atm = 760 mmHg.
Chapter 13 Notes Kinetic Molecular Theory. Kinetic Theory and Gases Kinetic Energy—Energy that an object has due to motion. The Kinetic Theory states:
Fluids & Pressure Objectives:
Explorations of Pressure and Variations of Pressure First, what is pressure?  Can you think of examples of pressure?
Gases.
Pressure!. Pressure Defined Force per unit area Force is a push or pull  Units of force are Newtons P = F/a Measured with a barometer.
Gases 4. Is the glass half-full or half-empty? 5.
Gases and their Properties. Kinetic-Molecular Theory Gases = large #’s of tiny particles spaced far apart Gases = large #’s of tiny particles spaced far.
Pressure. The amount of force an object puts on a surface. Pressure is measured by a barometer. Atmospheric pressure comes from air being pulled down.
THURSDAY REVIEW Two different gases, as long as they are at the same temperature, will have the same average kinetic energy KE = ½ mv 2 (where m = mass.
Kinetic Molecular Theory Images taken from
Pressure Force applied per unit area. Force Area.
Chapter 13: Gases Pressure Boyle’s Law Charles’s Law.
Chapter 5: Gases CHE 123: General Chemistry I Dr. Jerome Williams, Ph.D. Saint Leo University.
Gas Laws Chapter 12. Gases assume the volume and shape of their containers. Gases are the most compressible state of matter. Gases will mix evenly and.
Introduction to Gas Laws Chapter 14 Benchmark 4. Pressure The force per unit area that the particles in the gas exert on the walls of their container.
Gas Notes. Physical Properties of all gases  Gases have mass  Gases are easily compressed –Air in you car tires, air in a basketball  Gases will expand.
PRACTICE AND REVIEW GAS LAWS. STUDENT LEARNING OBJECTIVES 1.Define pressure. Identify units of pressure and make conversions between appropriate pressure.
The weight of Earth’s atmosphere above us exerts a pressure on us. In a way, we live at the bottom of an ocean of air.
The Behavior of Gases.
Warm-up 6-1 Convert -121°C to Kelvins
Units of Pressure Scientists have agreed on standard conditions of exactly 1 atmosphere (atm) pressure and 0oC. These conditions are called “standard.
Pressure: The Result of Molecular Collisions and The Simple Gas Laws
Lecture Presentation Chapter 8 Gases Karen C. Timberlake.
Chapter 6 Gases 6.2 Gas Pressure.
Chapter 11 Gas Laws.
Pressure and Temperature
1- ما تعليقك على هذه الصورة ؟؟
Gas Law Calculations.
Chemistry Notes Unit 7: Intro to Pressure
What is Pressure? To create the most pressure,
Gases Boyle’s Law.
The Nature of Gases Under Pressure!
Chemistry Chapter 11 - Gases
Chapter 11 Pressure and Force
The Behavior of Gases.
Chapter 11 Gas Laws.
Introductory Chemistry, 3rd Edition Nivaldo Tro
Gas Laws Pressure.
Chapter 5 Gases.
Atmospheric Pressure Pressure is equal to a force per area. The gases in the air exert a pressure called atmospheric pressure. Atmospheric pressure is.
Gases.
Gases.
Gases.
Pressure and Temperature
Presentation transcript:

1.15 Common Units of Pressure Average Air Pressure at Sea Level pascal (Pa) 101,325 kilopascal (kPa) 101.325 atmosphere (atm) 1 (exactly) millimeters of mercury (mm Hg) 760 (exactly) inches of mercury (in Hg) 29.92 torr (torr) pounds per square inch (psi, lbs./in2) 14.7 Tro's Introductory Chemistry, Chapter

Example 11.1: Converting Between Pressure Units

Tro's Introductory Chemistry, Chapter Example: A high-performance road bicycle is inflated to a pressure of 125 psi. What is the pressure in millimeters of mercury? What is the pressure in inches of mercury? What is the pressure in atmospheres? What is the pressure in pascals? Tro's Introductory Chemistry, Chapter