Gases
What state of motion are gas particles in?
Gas particles are constantly moving
Which is stronger, intramolecular or intermolecular forces?
Intramolecular forces are stronger
Which are denser, liquids or gases?
What are the two phases of ice water?
liquid water and solid ice
What is vapor pressure?
pressure caused by a vapor over a liquid
What is diffusion?
What type of attraction are hydrogen bonds?
Dipole-dipole attraction
Why are gases considered fluids?
Because they diffuse and don't have a fixed position
What is formed as a result of condensation?
precipitation, fog, and clouds
What is sublimation?
the process of a solid changing directly to a gas without becoming a liquid first
What diffuses more quickly? Heavier or lighter particles?
Lighter particles diffuse more rapidly
Do electrons stay still in the electron cloud?
No, electrons are in constant motion in electron cloud
What is an example of surface tension?
A spider or insect walking on the water surface
How does matter change phases?
when energy is added or removed
What is deposition?
A substance changing from a gas to a solid without becoming a liquid first
Where are there more gas particles? Higher or lower altitudes?
Higher altitudes, because the force of gravity is less
What atoms are needed in order to form a hydrogen bond?
Flourine, oxygen or nitrogen
What state of motion are the particles in solids in?
The particles in solids must always be in constant motion
What do phase diagrams represent?
How different temperatures and pressures affect the phase of a substance
What happens during the boiling point?
Below the surface of the liquid, bubbles of vapor collect and rise to the surface
What is the formula to determine kinetic energy?
KE= 1/2mv2
What are the regions of permanent dipoles?
Partially negative or partially positive
What are the five categoreis of crystalline solids?
atomic, molecular, covalent network, ionic and metallic solids
What are the six phases that can happen at the triple point?
freezing and melting, evaporation and condensation; sublimation and deposition
What is the triple point?
a point on a phase diagram that represents the temperature and pressure that the three phases of a substance can coexist