Vocabulary
What is an element that exists in different forms at the same state
What is the density formula?
What is D = m/v
What is the force that holds particles together in ionic, covalent, and metallic bonds?
What is intermolecular forces
What are the two types of forces?
What is cohesion and adhesion
Vaporization is a _____ process
What is endothermic
What are compounds that lower the surface tension of water called?
What is surfactants
Why is air pressure less at higher altitudes?
What is there are fewer particles at higher elevations that exert less force
What are the three forces of intermolecular forces?
What is dispersion forces, dipole-dipole forces, and hydrogen bonds
Why do liquids have a fixed volume?
What is the attraction between the particles limit liquid range of motion
When the liquid vapor pressure equals the external or atmospheric pressure it is called the what?
What is boiling point
What is a pascal?
What is the SI unit of pressure
What is definition of kinetic-molecular theory?
Which kind of hydrogen bond is stronger: Ones between water molecules or ones between ammonia molecules?
What is hydrogen bonds between water molecules
If the attraction between the particles is stronger, is the surface tension greater or lesser?
What is greater
Frost is an example of what?
What is deposition
What is it called when no kinetic energy is lost when gas particles collide?
What is elastic collision
What the device used to measure atmosphere pressure?
What is the barometer
Rate the intermolecular forces from weakest to strongest.
What is dispersion forces, dipole-dipole forces and hydrogen bonds
What are the three types of covalent network solids carbon forms?
What is diamond, graphite, buckminsterfullerene
What does a triple point represent on a phase diagram?
What is the temperature and pressure that 3 phases of a substance can coexist
What are dipole-dipole forces?
What is the attractions between oppositely charged regions of polar molecules
Define Graham's law of effusion
What is the effusion rate for a gas is equivalent to it molar masses square root
Which force is stronger in a a normal sized polar molecule?
What is dispersion forces
What does a unit cell determine?
The shape of the crystal
What is sublimation?
What is when a solid changes directly to a gas without becoming a liquid