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Concept Check
100

Who first discovered the relationship between the relationship between gas volume and temperature, later named Charles' Law

Jacques Charles

100

What is the relationship between the absolute temperature and volume at constant pressure

Volume of gas is directly proportional to the absolute temperature

100

What form of aviation relies directly on Charles's Law to function?

Hot Air Balloon

100

If temperature doubles under constant pressure what happens the volume of gas

Doubles

200

Who published Charles's Law in 1802

Joseph Louis Gay-Lussac

200

Formula for Charles's Law

V₁ / T₁ = V₂ / T₂

200

Why is it more likely for a balloon to pop during a hot day

The gas of volume inside the balloon increases, expanding the balloon to beyond its capacity causing it to pop.

200

Two balloons, one filled with helium one filled with hydrogen, have the same volume. Both are heated at constant pressure. According to Charles’s Law, how do their volume changes compare?

The volume changes are the same

300

Who inspired Charles with the invention of the hot air balloon

Joseph and Etienne Montgolfier

300

How to convert degrees celsius to kelvins

K = °C x (1 K/1°C) + 273.15

300

How might temperature-controlled incubators help support the lungs of premature infants? 

Warming of the air increases its volume and improves lung inflation, helping support effective ventilation and reducing respiratory stress. 

300

A student plots temperature (C) with volume (L) but observes a non-linear correlation. Why?

Temperature is in Celsius not Kelvin

400

What two time periods was Charles living in when discovering this law? 

Age of Enlightenment and Napoleonic Era

400

Why must temperature always be in Kelvins in Charles's Law

Kelvin starts at absolute zero, allowing for temperature and volume to be proportional

400

Why might a scientist observe a non-linear correlation between temperature and volume at low temperatures?

Charles’ Law assumes ideal gases, but in real life, gases have a condensation point. At low temperatures, gas particles slow down and intermolecular forces become significant, causing the gas to condense into a liquid before reaching absolute zero. As a result, the volume does not decrease linearly with temperature, and the relationship predicted by Charles’ Law becomes non-linear.

400

Why will Charles’ Law not work at absolute zero? 

It predicts the volume of the gas to be zero. However, matter must occupy space, so Charles' Law cannot be applied.