properties of gases Flashcards
- neither have definite size or shape
- take the shape of its container
gas
most gasses are not seen (carbon dioxide, oxygen)
invisible
smoke from vehicles
visible
easy to compress
compressibility
expand to fill their containers
expandability
Occupies more space
Occupy more space
particles are very far from each other
low density
flows in all directions
Can flow in all directions
when different gasses are mixed, they produce different colors
colorless
examples of colorless gasses:
ex: oxygen, nitrogen, methane
amount of a gas or its mass
mass
quantity of gas present in a container
mass
expressed in Moles (mol) or Grams (g)
mass
amount of space occupied by the gas
volume
expressed in Liter (L) or millimeter (mL)
volume
measures the hotness or coldness
temperature
measured in Celsius (°C) or Kelvin (K)
temperature
more and more energetic collisions
hot gas
fewer and less energetic collisions
cool gas
the average effect of the forces of the colliding molecules
pressure
measured in Atmosphere, tor, psi, cmHg, mmHg
pressure
What are their equivalents?
1 mL = ?
1 L = ?
1 m3 = ?
1 mL = cm3
1 L = 1 dm3
1 m3 = 1000 L
equivalents of 1 atm:
1 atm = 760 mmHg = 76 cmHg = 760 torr = 101325 Pa = 14.6956 psi
equivalents of 0°C:
0 °C = 273.15 K
0 °C = 32 °F
in the middle of 1600s, Robert Boyle studied the relationship between the pressure and the volume of a confined gas held at constant temperature
Boyle’s Law
