states of matter

Question 1

How do halogens exist?

Answer 1

diatomic molecules

Question 2

What are the 3 types of intermolecular forces?

Answer 2

1) dispersion forces (London dispersion forces0
2) dipolar forcers (dipole-dipole interactions)
3) hydrogen bonds

Question 3

dispersion forces (London dispersion forces)

Answer 3

attraction arising from constant motion of electrons

Question 4

dipolar forces (dipole-dipole interactions

Answer 4

attractions between oppositely charged ends of neighbouring molecules

Question 5

hydrogen bonds

Answer 5

attraction between lone pair of electrons on N/O/F atom + H

Question 6

What does the magnitude of dispersion forces depend on?

Answer 6

how easy it is to distort the electron cloud of a molecule

Question 7

polarisability

Answer 7

ease of distortion

Question 8

How can the pressure of the atmosphere be measured?

Answer 8

using a barometer

Question 9

pV =

Answer 9

1) k

2) nRT

Question 10

p units

Answer 10

Pa

Question 11

V units

Answer 11

m³

Question 12

n units

Answer 12

mol

Question 13

R

Answer 13

8.314

Question 14

T units

Answer 14

K

Question 15

effusion

Answer 15

movement of molecules escaping from a container into a vacuum

Question 16

diffusion

Answer 16

movement of one type of a molecule through molecules of another type

Question 17

total pressure =

Answer 17

sum of partial pressures

Question 18

mole fraction of A = Xₐ =

Answer 18

nₐ/nₜₒₜₐₗ

Question 19

pₐ =

Answer 19

Xₐ x pₜₒₜₐₗ

Question 20

surface tension

Answer 20

measure of the resistance of a liquid to an increase in its surface area

Question 21

capillary action

Answer 21

upward movement of water against the downward force of gravity

Question 22

viscosity

Answer 22

a liquid’s resistance to flow

Question 23

vapour pressure

Answer 23

pressure at which dynamic equilibrium is achieved in a closed container

Question 24

giant metallic lattice

Answer 24

regular array of positively charged metal ions embedded in a sea of mobile delocalised electrons

Question 25

How can the arrangement of atoms in a crystalline structure be determined?

Answer 25

x-ray diffraction