Behavior of Gases Chapter 3 Section 3
Let’s Review What is the definition of Volume? Amount of space something takes up What is the SI Unit for Volume? m3 (but we also use cm3, mL, L) What is the definition of Temperature? Average kinetic energy (motion) of the particles of matter Higher Temperature means…?? the particles are moving faster
The pressure would __________! Force of the gas particles divided by the area of the walls of the container. As Gas Particles increase in a confined container = Pressure ___________ What would happen if you opened the container and provided more volume for the gas particles? The pressure would __________!
What does it mean to “pump air” into a ball?
What happens to gas particles when temperature increases? 1. Charles’s Law What happens to gas particles when temperature increases? The particles _________ The more temperature the __________ the particles are moving. The ___________ the particles are moving the ____________ they are moving. (Remember the kindergarteners?)
When the temperature of a gas is decreased, the volume _____________. Charles’s Law States. . . When the temperature of a gas is increased at a constant pressure, the volume ______________. When the temperature of a gas is decreased, the volume _____________.
What kind of relationship is this? ____________ proportional
How do Hot Air Balloons fly? Send a message to someone answering this question!
How do Hot Air Balloons fly? Flames cause the temperature of the air to increase and the balloon to expand. The volume of the hot air increases when the temperature increases… making it less dense than the air outside!
2. Boyle’s Law When the pressure of a gas at a constant temperature is increased, the volume of the gas ____________. When the pressure of a gas is decreased, the volume of the gas _____________.
As you apply pressure to a gas, the volume will decrease.
What kind of relationship is this? ____________ proportional
3. Temperature & Pressure As Temperature of a gas increases at a constant volume, pressure _________ Why? Define Temperature. Particles move faster and collide more frequently.
Temperature & Pressure Charles’s Law IF THEN __________ proportional Boyle’s Law Temperature & Pressure