Justin charles and boyles law

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Downloaded by Melk Kid (kidmelk@gmail.com) the volume of the gas decreases and the tank can contain all the helium gas No They bounce off of the lid and walls. It affects the pressure of the molecules. it affects how big or small the volume gets Name: Student Exploration: Boyle’s Law and Charles’s Law Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: absolute zero, Boyle’s law, Charles’s law, Gay-Lussac’s law, Kelvin scale, pressure Prior Knowledge Question (Do this BEFORE using the Gizmo.) A small helium tank measures about two feet (60 cm) high. Yet it can fill over 50 balloons! How can such a small tank contain enough helium to fill so many balloons? Gizmo Warm-up The Boyle’s Law and Charles’s Law Gizmo shows a container of gas. Inside, small purple spheres represent gas molecules. 1. Observe the particles. Are they all moving at the same speed? 2. How do the particles interact with the walls and lid of the container? These interactions contribute to the pressure on the walls of the container. Pressure i 1 s defined as force per unit area. The SI units of pressure are newtons per square meter (N/m 2 ), or pascals (Pa). 2. Slowly drag the temperature ( T ) slider back and forth. (Note: In this Gizmo, the Kelvin scale is used to measure temperature. On the Kelvin scale, 0 degrees is absolute zero , the coldest possible temperature. Absolute zero is equal to -273.15 °C or -459.67 °F) A. How does the change in temperature affect the speed of the molecules? B. How does the change in temperature affect the volume of the container? 1 Justin lammersdorf Date: 10/19/2023

volume was divided by 2 volume was divided by 3 Downloaded by Melk Kid (kidmelk@gmail.com) Question: How does pressure affect the volume of a gas? 1. Notice : Look at the DESCRIPTION pane. What is the mass of the lid? 10 kg How much pressure does the lid exert on the gas? 98.1 N/m2 2. Collect data : With the temperature held constant at 300 K, use the Select mass slider to place weights on the lid. Record the pressure and volume of the gas for each added mass. Added mass on the lid Total mass (lid + added mass) Pressure* Volume 0 kg 10 kg 98.1 2.54 10 kg 20 kg 196.2 1.27 20 kg 30 kg 294.3 0.85 30 kg 40 kg 392.4 0.64 *This model does not include atmospheric pressure, which is 101,325 N/m 2 . 3. Analyze : As the pressure increases at constant temperature, what happens to the volume of the gas? This relationship is called Boyle’s law . 4. Calculate : Compare the pressure and volume values in your data table. A. How did doubling the pressure change the gas volume? B. How did tripling the pressure change the gas volume? Reproduction for educational use only. Public sharing or posting prohibited. © 2020 ExploreLearning™ All rights reserved Get the Gizmo ready: Set the temperature ( T ) to 300 K. Check that the mass ( m ) is set to 0 kg. Activity A: Boyle’s law when the pressure of a gas at constant temperature is increased, the volume of the gas decreases.

Get the Gizmo ready: On the SIMULATION pane, set T to 300 K and m to 15 kg. Turn on the Constant volume checkbox. Activity C: Gay-Lussac’s Law Downloaded by Melk Kid (kidmelk@gmail.com) Question: How does temperature affect the volume of a gas? 1. Collect data : Without changing the mass on the lid, record the pressure and volume of the gas at each of the given temperatures. Temperature Pressure* Volume 100 K 98.10 0.85 200 K 98.10 1.70 300 K 98.10 2.54 400 K 98.10 3.39 500 K 98.10 4.24 *This model does not include atmospheric pressure, which is 101,325 N/m 2 . 2. Analyze : As the temperature increases at constant pressure, what happens to the volume of the gas? This relationship is called Charles’s law . 3. Calculate : Compare the pressure and volume values in your data table. C. How did doubling the temperature affect the gas volume? D. How did tripling the temperature affect the gas volume? E. How did quadrupling the temperature affect the gas volume? 4. Test : Suppose the temperature was 50 K. What is the volume of the gas? Question: How does temperature affect the pressure of a gas when volume is constant? Get the Gizmo ready: On the SIMULATION pane, set T to 100 K and m to 0 kg. Activity B: Charles’s law The Volume also increases at constant pressure volume doubled volume tripled volume quadrupled 0.42