Unit 3 Day 1

Question 1

Intra

Answer 1

Within

Question 2

Inter

Answer 2

Between

Question 3

Intra or inter stronger

Answer 3

Intra(within) is stronger

Question 4

Intra forces

IMF

Answer 4

Ionic
Covalent

Question 5

Inter forces

IMF

Answer 5

Ion ion
Dip dip
H bond
LDF

Question 6

Strongest lattice energy

Answer 6

Charge/ radius

High charge then small radius

Question 7

Polar molec attract other molec

Answer 7

Electrostatically

Question 8

Strongest dipole interactions means

Answer 8

Most polar

Question 9

Np molec can attract other np molec

Answer 9

Electrostatically

Question 10

Polarizability

Answer 10

Measure of how easily the electron cloud can be distorted

Question 11

What IMF is the only one with a full charge

Answer 11

Ion ion

Question 12

What is the only IMF type with temp dip

Answer 12

LDF

Question 13

What does dissolving salt in water do(what imf)?

Answer 13

Ion-dip

Question 14

All physical properties of solids and liquids are determined by?

Answer 14

IMFS

Question 15

What IMF is for gases

Answer 15

No IMF with ideal gas

Question 16

Strong IMF =(BP?)

Answer 16

High BP

Question 17

Strong IMF =

VAPOR?

Answer 17

low vp

Question 18

what determines pressure

Answer 18

The number of Molecules colliding with the wall of the vacuum box

Question 19

What is pressure(formula)

Answer 19

Force over area

Question 20

What is VP

Answer 20

A physical property of a liquid

Question 21

When can VP be determined

Answer 21

The rate of condensation equals the rate of evaporation

Question 22

Cohesive forces

Answer 22

How attracted it is to itself, attractions between same molecules

Question 23

Adhesive forces

Answer 23

How attracted it is to container, attractions between diff molec

Question 24

What must be true for concave meniscus

Answer 24

Adhesive forces are greater than cohesive forces

Question 25

Which molecules has higher energy Surface of bulk molecule?

Answer 25

Surface molecules do, they are less stable

Question 26

What is viscosity

Answer 26

Resistance to flow

Question 27

What is more viscous (Size)

Answer 27

Larger molecules

Question 28

What is more viscous Temp

Answer 28

Cold

Question 29

What is more viscous Polarizability

Answer 29

More polarizable is more viscous

Question 30

Melting point

Answer 30

The temp at which imfs break and distance btwn molec increase

Question 31

4 types of solids

Answer 31

Ionic molecular covalent network Metallic

Question 32

Ionic solids

Answer 32

Hard, rigid, high MP Conduct electricity when dissolved in water Btwn cations and anions

Question 33

Molecular solids

Answer 33

Melting points below 500k Are brittle Don’t conduct electricity

Question 34

Covalent network

Answer 34

Melting points above 500k, hard, insoluble in water

Question 35

High imfs =? mp

Answer 35

High melting pt

Question 36

Metallic solids

Answer 36

Held by metallic bonds only, malleable and ductile, good thermal and electrical conductors

Question 37

What imf do ion have

Answer 37

Ion ion

Question 38

What IMF do molecular have

Answer 38

H bond, dip dip, LDF

Question 39

What bonds do covalent networks have

Answer 39

Covalent bonds

Question 40

What bonds do metallic solids have

Answer 40

Dative bonds

Question 41

Polarizability increases with?

Answer 41

Increasing number of electrons so therefore increasing size of molecules

Question 42

LDF are usually stronger for…

Answer 42

Molecules that are larger with more electrons

Question 43

What are instantaneous dipoles

Answer 43

LDF

Question 44

What IMF do all molec have

Answer 44

LDF

Question 45

What do IMFS result from

Answer 45

Attractive forces between regions of positive and negative charge density in neighboring molecules

Question 46

Coloumbs law theory

Answer 46

The closer 2 charges are(3+ and 3- vs 1+ and 1-) the stronger the force between them

Question 47

Coloumbs law equation

Answer 47

Electric force equals columb constant(k) times charge 1 and charge 2 divided by the distance btwn the 2 charges squared

Question 48

What do solid lines represent

Answer 48

Covalent bonds

Question 49

Where do h bonds happen

Answer 49

Between 2 diff molecules(inter)

Question 50

Are covalent bonds stronger than h bonds

Answer 50

Yes Intramolecular(within) is stronger than intermolecular (between)

Question 51

If a molecule is np what IMF can it have

Answer 51

ONLY dispersion

Question 52

if at same temp pressure and vol which has greater number of collisions, He or O2 and why

Answer 52

He because it is less big and therefore moves with a higher velocity

Question 53

What imf contributes to physical properties of substance

Answer 53

Intermolecular

Question 54

What imf holds molecules together

Answer 54

Intramolecular

Question 55

When adhesive forces are greater than cohesive forces, a liquid will tend to try to wet the surface. This means the liquid will maximize attractive forces my

Answer 55

Maximizing contact with the surface

Question 56

When the cohesive forces are greater than the adhesive forces, a liquid will tend to bead on the surface. The liquid will maximize attractive forces by

Answer 56

Minimizing contact with the surface

Question 57

A property of liquid thats arise because molecules at the surface have a higher energy(less stable) than the molecules in the middle of the liquid

Answer 57

Surface tension

Question 58

Round droplet means

Answer 58

Strong attractive forces, IMF

Question 59

SATP

Answer 59

1 bar and 25 degrees C

Question 60

Percent yield

Answer 60

Lab ver stcich