 Complete the practice set of questions by yourself.  Time: 5 min.

January 8th

Catalyst10 minutes Balloons and Dry Ice10 minutes You down with KMT??15 minutes Temperature10 minutes Pressure10 minutes Exit Ticket10 minutes

 draw conclusions based on the kinetic molecular theory  convert between units of pressure and units temperature

 What is causing the balloon to inflate and deflate?  Think down to the molecular level

 In your group of 4:  Create a list of the conclusions about gases that were drawn from both the Do Now and the Hook  Time: 4 minutes

 1. Gases consist of tiny particles  2. Volume of individual gas particles is assumed to be zero  3. Particles are in constant motion, colliding with walls of the container (this causes pressure)  4. Particles do not attract or repel each other  5. Average kinetic energy of gas particles is directly proportional to the Kelvin temp of the gas

 1. Meaning of Temperature: temperature of a gas reflects how rapidly its particles are moving  2. Pressure vs. Temperature: as pressure increases, temperature also increases  3. Volume vs. Temperature: as temperature increases, volume also increases if pressure is held constant

 Find any conclusions that you developed which match conclusions in the KMT. Draw a line to show they are the same.  What would you add to yours?

A. 30 degrees Celsius B. 60 degrees Celsius C. 90 degrees Celsius D. 120 degrees Celsius

A. Decrease B. Increase C. Stay the same D. Temperature has no effect on volume

Catalyst10 minutes Balloons and Dry Ice5 minutes You down with KMT??15 minutes Temperature10 minutes Pressure10 minutes Exit Ticket10 minutes

 1. Temperature  2. Pressure  3. Volume  4. Moles

 Measure of the random motion of the components of a substance

0 Kelvin is Absolute Zero (the lowest possible temperature/all movement stops)  Temperature scale used in science  The unit is K (for Kelvin)

 What is the difference between the Kelvin and Celsius scales for temperature? Temperature Conversions: t ⁰ C = t k -273 t k = t ⁰ C + 273

 You have 1 minute to convert 54°C to Kelvin t k = t ⁰ C t k = = 327 K

Catalyst10 minutes Balloons and Dry Ice5 minutes You down with KMT??15 minutes Temperature10 minutes Pressure10 minutes Exit Ticket10 minutes

 1. Temperature  2. Pressure  3. Volume  4. Moles

 Pressure is a measure of force applied to an area

1 standard atmosphere (1atm)= mmHg = torr = 14.69psi  (In Gas Laws Problems we use atm)

 We can use the above equivalence statement to convert between units of atm, mmHg, torr, and psi using conversion factors  Class Example: Convert torr to atm.

 You have 1 minute to convert from 28 psi to atm 28psi x 1 atm psi = 1.9 atm

 You have 1 minute to convert 1400 mm Hg to atm 1400mm Hg x 1 atm mm Hg = 1.8 atm

Catalyst10 minutes Balloons and Dry Ice5 minutes You down with KMT??15 minutes Temperature10 minutes Pressure10 minutes Exit Ticket10 minutes

 Based on the KMT, which of the following is true of the two words we learned today? A. If temperature increases, pressure decreases B. As the motion of particles increases, the pressure they apply decreases C. When the temperature increases, the amount of force applied by a gas will increase.

1 standard atmosphere (1atm)= mmHg = torr = 14.69psi  (In Gas Laws Problems we use atm)  t ⁰ C = t k -273  t k = t ⁰ C + 273