gases Flashcards
(26 cards)
What is the state of matter characterized by having no fixed shape and no fixed volume?
Gas
True or False: Gases have a definite volume.
False
What law states that the volume of a gas is inversely proportional to its pressure at constant temperature?
Boyle’s Law
Fill in the blank: The __________ of a gas is defined as the average kinetic energy of its particles.
temperature
What is the term for the pressure exerted by a gas in a container?
gas pressure
Which gas law relates volume, temperature, and pressure of an ideal gas?
Ideal Gas Law
True or False: Gases are compressible.
True
What is the formula for the Ideal Gas Law?
PV = nRT
What does ‘R’ represent in the Ideal Gas Law?
The ideal gas constant
Which gas law states that the volume of a gas is directly proportional to its temperature at constant pressure?
Charles’s Law
What is the term for the process of gas escaping from a container into a vacuum?
effusion
True or False: The molecules in a gas are tightly packed together.
False
What happens to gas pressure when the temperature increases, assuming volume is constant?
It increases.
What is the term for the measurement of the amount of gas present in a container?
molar volume
Fill in the blank: The __________ is the volume occupied by one mole of an ideal gas at standard temperature and pressure.
molar volume
Which principle states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of each gas?
Dalton’s Law of Partial Pressures
What is the term for the ratio of the density of a gas to the density of a reference gas, usually air?
specific gravity
True or False: Gases have low densities compared to solids and liquids.
True
What is the relationship between gas volume and temperature according to Charles’s Law?
Volume increases as temperature increases.
What is the main assumption of the kinetic molecular theory of gases?
Gas particles are in constant, random motion.
Fill in the blank: The __________ states that gas particles do not attract or repel each other.
kinetic molecular theory
What happens to the volume of a gas when its pressure is decreased at constant temperature?
The volume increases.
True or False: The behavior of real gases deviates from the ideal gas law at high pressures and low temperatures.
True
What is the effect of increasing the number of gas particles in a container on the pressure, assuming temperature and volume are constant?
The pressure increases.
