Absolute Zero

Front

What is absolute zero?

Back

Absolute zero is the lowest possible temperature, where molecular motion stops, defined as 0 Kelvin or -273.15°C.

Front

What happens to molecular movement as temperature decreases?

Back

As temperature decreases, the molecules move at slower speeds.

Front

What is the temperature of absolute zero in Kelvin?

Back

0 Kelvin.

Front

Why can't we reach absolute zero?

Back

It is impossible to reach absolute zero because there is always some molecular movement.

Front

What does temperature measure in a substance?

Back

Temperature measures the average speed of the molecules in a substance.

Front

What is the coldest recorded temperature on Earth?

Back

The coldest recorded temperature on Earth was in Antarctica.

Front

What happens to the energy of molecules as temperature approaches absolute zero?

Back

The energy of the molecules decreases as temperature approaches absolute zero.

Front

What is the relationship between temperature and molecular speed?

Back

Higher temperatures correspond to faster molecular speeds, while lower temperatures correspond to slower speeds.

Front

What is the significance of absolute zero in thermodynamics?

Back

Absolute zero is significant in thermodynamics as it represents a state where entropy reaches its minimum value.

Front

What is the Celsius equivalent of absolute zero?

Back

-273.15°C.