Grab binders, calculators & handouts Begin the Do Now 10/4 Do Now What are the units for both temperature (most commonly used in science) and pressure? What is the Standard Temperature & Pressure? Convert 38°C to Kelvin. Convert 373K to °C. If a force of 60N is applied over an area of 3m 2, what pressure is felt?

Recap -Open vs. Closed systems -STP (Standard Temperature & Pressure) -Gas particles exert pressure against their containers

Kinetic Molecular Theory Model Directions: - Choose a KMT model - Open the model and move it around - Answer the following 4 questions in your notes *M&M’s represent gas particles, DO NOT EAT!

Kinetic Molecular Theory (KMT) Directions: Answer the following questions in your notes. 1. Do the “gas particles” attract or repel one another? 2. Do the particles ever stop moving when you are shaking the box? 3. Are all of the particles moving at the same speed? In the same direction? 4. Do the particles add mass to the box system?

KMT & P-T Relationship Key Point #1 Key Point 1: - Kinetic Molecular Theory = Gas particles… - do not attract or repel each other - are in constant random motion - KE is directly related to their T - have mass

Human Gas Particle Activity: How are the pressure and temperature of a gas related?

Key Point #2 Key Point 2: - Diffusion = random spread of particles from high to low pressure Why is it that global warming does not solely occur over places where factories are located?

Key Point #3 Key Point 3: Pressure and Temperature=DIRECT relationship - As 1 variable changes, the other changes in the same direction

Key Point #4 Key Point 4: -Gay-Lussac’s Law = math equation that describes relationship between P and T of a gas P 1 = P 2 T 1 T 2 Initial Final

Gay-Lussac’s Law Example 1 Compute the missing value: T 1 = 322K; P 1 = ?; T 2 = 303K; P 2 = 2.0atm P 1 = P 2 T 1 T 2

Gay-Lussac’s Law Example 2 Compute the missing value: T 1 = ?; P 1 =6.0atm; T 2 = 546K; P 2 = 10.0atm P 1 = P 2 T 1 T 2

Gay-Lussac’s Law Example 3 Compute the missing value: T 1 = 364K; P 1 =2.0atm; T 2 = 123K; P 2 =? P 1 = P 2 T 1 T 2

Gay-Lussac’s Law Example 4 Compute the missing value: T 1 = 273K; P 1 =5.5atm; T 2 = ?; P 2 = 1.0atm P 1 = P 2 T 1 T 2

Gay-Lussac’s Law Example 5 A gas system has an initial temperature of 443.0K with the pressure unknown. When the temperature changes to 1390K the pressure is found to be 7.77atm. What was the initial pressure? P 1 = P 2 T 1 T 2

Gay-Lussac’s Law Example 6 P 1 = P 2 T 1 T 2 A gas system has initial pressure and temperature of 12.0atm and 27.9°C If the pressure changes to 3.74atm, what will the end temperature be in °C?

Relay Race Warm-Up 15 minutes to complete the rest of the relay race warm up on your own * ALWAYS check your UNITS! P 1 = P 2 T 1 T 2

Relay Race 1.Get into teams of 4 2.Each team gets a relay round, once Ms. Herndon says go, flip over the round and answer the questions 3.Once finished, raise your hands and shout out “Ms. Herndon!” I will check your group’s answers. UNITS must be correct to get answer right!

Relay Race 1.6 rounds, 4 questions each 2. Round placements will be tracked. Even if your team does not get 1 st place, keep going! 3. Relay Winner Prizes: 1 st place = 5 points added to next quiz 2 nd place = 3 points added to next quiz 3 rd place = 1 point added to next quiz

Exit Ticket #7 Complete Exit Ticket 7 to the best of your abilities on your own & without notes.