Graphing Boyle’s Law

The relationship between pressure and volume is inversely proportional: when one goes up the other goes down.

Pressure and TemperatureWhen a gas is heated, the particles move faster

and collide more often with each other and with the walls of their container. The pressure of the gas increases.

Graphing Gas BehaviorIn an experiment, the temperature of a gas at a constant volume was varied. Gas pressure (in kilopascals) was measured after each 5-kelvin change in temperature. The data from the experiment are shown in the table.

Graphing Gas BehaviorGraphing

Use the data to make a line graph. Plot temperature on the horizontal axis with a scale from 270 K to 300 K. Plot pressure on the vertical axis with a scale from 0 kPa to 25 kPa. (1 kPa = 1,000 Pa)

Graphing Gas Behavior

Changing the temperature of a gas at constant volume changes its pressure in a similar way.

Interpreting Data

What was the manipulated variable in this experiment?

Graphing Gas Behavior

Pressure increases with temperature.

Interpreting Data

What kind of trend do the data show?

Graphing Gas Behavior

Gas pressure increases.

Drawing Conclusions

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

Gas Laws Activity

• Click the Active Art button to open a browser window and access Active Art

about gas laws.

End of Section:The Behavior of

Gases