Chapter 4 Lesson 3 Gas Behavior

Chapter 4 Big Question How does a substance change states?

Chapter 4 Objectives

How are Pressure and Temperature of a Gas Related? Temperature increases, pressure increases Temperature decreases, pressure decreases Ex: truck tires burst on hot day Temp. is increased, so is pressure Pressure continues to increase until tires can’t hold any more *BOOM*

Temperature and Gas Pressure When a gas is heated in a closed, rigid container, the particles move faster and collide more often. How would the change in pressure of the gas be shown on each pressure gauge?

How Are Volume and Temperature of a Gas Related? Charles’s law Temperature increases, volume increases Temperature decreases, volume decreases Volume and pressure have a directly proportional relationship (increase or decrease at the same rate)

Cooling a Balloon The volume of a gas-filled balloon decreases as temperature decreases and then increases as temperature increases.

Charles’s Law How would the gas particles and piston look at the different higher temperatures?

Charles’s Law in Action Soda Can

In an experiment, a gas is heated at a constant pressure In an experiment, a gas is heated at a constant pressure. The data shown in the table are plotted on the graph.

What happens to the volume of a gas when the temperature is increased at constant pressure?

Suppose the data formed a line with a steeper slope Suppose the data formed a line with a steeper slope. For the same change in temperature, how would the change in volume compare?

How Are Pressure and Volume of a Gas Related? Boyle’s Law Pressure increases, volume decreases Pressure decreases, volume increases Inversely proportional relationship (opposite)

Boyle’s Law As weights are added to the top of each piston, the piston moves farther down in the cylinder. Rank the pressure and the volume in each of the cylinders.

Graphing Boyle’s Law Use the data to make a line graph Graphing Boyle’s Law Use the data to make a line graph. What would be a good title for the graph?

Boyle’s Law in Action https://www.youtube.com/watch?v=N5xft2fIqQU