SCIENCE (DESCRIBING GASES Flashcards
Properties of Gases
1.Shape
2.Volume
3.Density
Gases do not have a definite shape
Shape
Gases do not have a fixed volume
Volume
They take the shape of their container because gas particles move freely and spread out in all directions.
Shape
They expand to completely fill the container they are in.
Volume
Gases generally have low density compared to solids and liquids because gas particles are widely spaced apart.
Density
- Gases are highly compressible, meaning their volume can decrease significantly when pressure is applied.
Compressibility
explains the behavior of gases based on the idea that gas particles are constantly moving
Kinetic Molecular Theory (KMT)
It describes how gases behave under different conditions, such as changes in temperature, pressure and volume.
Kinetic Molecular Theory (KMT)
are in constant, random motion.
Gas particles
are very small compared to the space they oссuру.
Gas particles
There are no significant forces of attraction or repulsion between
Gas particles
Collisions between gas particles and with the container walls are
perfectly elastic.
The average kinetic energy of gas particles is directly proportional to _____________ ?
temperature
When a gas is heated, its particles move faster, leading to _______________________ if the volume is flexible.
- higher pressure or expansion
When a gas is compressed, particles are forced closer together,
- increasing pressure
When a gas cooled, its particles slow down, causing the gas to
contract or exert less pressure
The Kinetic Molecular Theory helps explain gas laws such as
Boyle’s Law (pressure-volume relationship), Charles’ Law (temperature-volume relationship), and Gay-Lussac’s Law (temperature-pressure relationship).
Fundamental Properties of Gases
- Volume (V) –
- Pressure (P)
- Temperature (T)
- Amount of Gas (n)
– the amount of space a gas occupies
- Volume (V) –
the force that gas particles exert when they collide with the walls of their container.
- Pressure (P)
the measure of the average kinetic energy (motion) of gas particles
- Temperature (T)
the mass of the gas is related to the number of moles of the gas.
- Amount of Gas (n)
who is the Anglo-Irish chemist that was able to investigate the relationship between pressure and volume of a gas using J - shaped tube apparatus which was closed to one end.
Robert Boyle
An Anglo-Irish chemist, Robert Boyle, was able to investigate the relationship between pressure and volume of a gas using J - shaped tube apparatus which was closed to one end.
Boyle’s Law (Pressure-Volume Relationship)
what equipment did he use to investigate the relationship between pressure and volume of a gas
