Gases and the KMT Test Review

Front

What factors can increase the pressure of a gas in a system?

Back

Increasing the temperature, pumping in more gas, and decreasing the volume can all increase the pressure of a gas.

Front

What is the 3-D shape of the H₂S molecule?

Back

The H₂S molecule has a bent shape.

Front

What is the boiling point of a substance if its heating curve indicates it boils at 60°C?

Back

The boiling point is 60°C.

Front

What is the melting point of a substance if its heating curve indicates it melts at -60°C?

Back

The melting point is -60°C.

Front

According to the kinetic molecular theory, how do particles of an ideal gas behave?

Back

Particles of an ideal gas are in random, constant, straight-line motion.

Front

What is the relationship between temperature and gas pressure?

Back

As temperature increases, gas pressure also increases if the volume is constant.

Front

How does decreasing the volume of a gas affect its pressure?

Back

Decreasing the volume of a gas increases its pressure, assuming the temperature remains constant.

Front

What is the definition of an ideal gas?

Back

An ideal gas is a hypothetical gas that perfectly follows the gas laws and has no interactions between its particles.

Front

What is the significance of the heating curve in understanding phase changes?

Back

The heating curve shows how a substance changes temperature and phase as heat is added, indicating melting and boiling points.

Front

What happens to gas particles when they are heated?

Back

When gas particles are heated, they gain kinetic energy and move faster, which can increase pressure.