Gas Behavior Chapter 2

What influences the volume of a gas? Volume = the amount of space a piece of matter takes up. Gases expand and take the volume of their container.

What influences the volume of a gas? 2 variables influence gas volume Temperature Measures the energy of moving particles Higher energy = Higher temperatures

What influences the volume of a gas? 2 variables influence gas volume Pressure Gases push outwards against the walls of their containers. This creates pressure (outward force) P = Force of gas/ Area of the container Units are Pascals (Pa) Gas always goes from high pressure to low pressure

What is Boyle’s Law? The relationship between volume and pressure is inversely proportional.

What is Boyle’s Law? MARSHMALLOW DEMONSTRATION grow shrink -If P then V  -If P  then V 

What happens when you blow up a balloon? -Pressures are Equal again. -Outside & Inside Pressure are Equal -Inside Pressure is Greater

What is Charles’s Law? The relationship between volume and temperature is directly proportional. *When pressure is constant and gas can’t escape or enter! -If the temperature of a gas  then V  -If the temperature of a gas  then V  -If T then V  -If T then V 

What is the relationship between all three variables? In real life, T and P and V are not always constant. When one changes, so can all the others. -If T then V  then P  -If T then V  then P