CHEM IMF CONCEPTS LIQUID

Question 1

explain kinetic molecular theory

Answer 1

offers a description about the microscopic properties of atom or molecules that lead to macroscopic properties changes such as in pressure, volume, and temperature. Application of this would explain why matter exist in different phases (s,l,g), and how to move phases from one to the next

Question 2

abstractions and generalizations of kinetic molecular theory

Answer 2

1. all matter are made up of particles
2. all particles have energy, but varies depending on the temperature of the matter
3. the temperature is the measure of the average kinetic energy of the substance
4. a change in phase occurs if there is a change in energy of the particles
5. there are spaces in between molecules
6. there are attractive forces between atom/molecules of matter, and it gets stronger when they are closer
7. atoms, molecules, ion particles differ in nature depending on its phase of matter

Question 3

relation of imf to temperature

Answer 3

the stronger the imf the higher the temperature change needed to break the bond in from one phase to the next

Question 4

these forces of attraction result from temporary dipole moments induced in ordinarily nonpolar molecules

Answer 4

dispersion force

Question 5

The extent to which a dipole moment can be induced in a molecule

Answer 5

polarisability

Question 6

relationship of the electron to its polarizability

Answer 6

the more amount of electrons, and the more diffused the electron cloud the more polarizable a particle is

Question 7

intermolecular forces that are attractive forces between polar molecules

Answer 7

Dipole-Dipole

Question 8

the relationship of dipole moment to the attractive force

Answer 8

the larger the dipole moment the more stronger the attractive force are

Question 9

is a special type of dipole-dipole interaction between the hydrogen atom in a polar bond of an electronegative O, N, or F atom

Answer 9

hydrogen bond

Question 10

explain why surface tension is an intermolecular force

Answer 10

Molecules in liquid state experience strong intermolecular attractive
forces. When those forces are between like molecules, they are referred to as cohesive forces. the molecules of a water droplet are held together by cohesive
forces, and the especially strong cohesive forces at the surface to form surface
tension

Question 11

generalization and abstraction of properties of liquid

Answer 11

1. surface tension, viscosity and capillary action are properties of water that depends on the intermolecular interactions for their behavior
2. surface tension is a measure of the elastic force on the surface of a liquid, it is the force that is required to stretch or move the surface of a liquid by a unit area.
3. molecules in a liquid are pulled in all directions
4. capillary action is the tendency of the water to rise in narrow tubes or be drawn in small openings it is the result of the intermolecular attraction between the water and solid material around it.
5. there are two types of forces involved in capillary action (cohesion, adhesion)
6. viscosity is the measure of the liquid’s resistance to flow

Question 12

relate the amount of gas to the vapor pressure

Answer 12

the larger the amount of gas particles the higher the vapor pressure

Question 13

the pressure exerted by a gas in equilibrium to the liquid in a closed container in a given temperature

Answer 13

vapor pressure of the liquid

Question 14

relate the temperature to the vapor pressure

Answer 14

the higher the temperature the higher the vapor pressure

Question 15

is is the energy required to vaporize 1mol of liquid in a given temperature

Answer 15

molar heat of vaporization

Question 16

explain the concept about boiling point

Answer 16

1. the boiling point is the temperature to which a liquid turns into a vapor
2. it is when the vapor pressure of the liquid is in equilibrium to the external pressure acting on the surface of the water
3. the normal boiling point is the boiling point at 1atm
4. the boiling point of a substance is reflects the intermolecular force of the particles of a sample

Question 17

unique properties of water

Answer 17

1. water is a good solvent
2. water has high specific heat
3. high boiling point
4. solid water is less dense than liquid water

Question 18

it is the amount of energy required to raise the temperature of one gram of substance by 1oC

Answer 18

specificheat