The process used to separate individual groups of hydrocarbons in crude oil is called [blank_start]fractional distillation[blank_end].
Respuesta
fractional distillation
Pregunta 2
Pregunta
What is a structural isomer?
Respuesta
Different molecular formula but same structural formula
Same molecular formula but different structural formula
Different molecular formula and different structural formula
Pregunta 3
Pregunta
Balance the equation
SO2 + [blank_start]2[blank_end]H2O + O2 -> [blank_start]2[blank_end]H2SO4
Respuesta
1
2
3
4
2
1
3
4
Pregunta 4
Pregunta
CO2 is a [blank_start]linear[blank_end] molecule because there are [blank_start]2[blank_end] groups of electrons on both sides of the C atom. They [blank_start]repel[blank_end] each other so they are as [blank_start]far apart[blank_end] from each other as possible. The bond angle is [blank_start]120°[blank_end].
Respuesta
linear
bent
tetrahedral
2
3
4
repel
far apart
close
120°
109.5°
180°
Pregunta 5
Pregunta
[blank_start]An advantage[blank_end] of nuclear energy compared to fossil fuels is that no CO2 is produced. [blank_start]A disadvantage[blank_end] is the radoiactive waste.
Respuesta
An advantage
A disadvantage
Pregunta 6
Pregunta
Carbon has [blank_start]covalent[blank_end] bonding and has a [blank_start]giant[blank_end] structure. Sulfur has [blank_start]covalent[blank_end] bonding and has a [blank_start]simple molecular[blank_end] structure.
Respuesta
covalent
giant
covalent
simple molecular
Pregunta 7
Pregunta
Bond breaking is [blank_start]endothermic[blank_end]. Bond making is [blank_start]exothermic[blank_end].
Respuesta
endothermic
exothermic
endothermic
exothermic
Pregunta 8
Pregunta
At room temp, iodine is a grey [blank_start]solid[blank_end].
Respuesta
solid
Pregunta 9
Pregunta
Propanone is made from the alcohol, [blank_start]propan-2-ol[blank_end].
Respuesta
propan-2-ol
Pregunta 10
Pregunta
In dynamic equilibrium, the rate of the forward reaction is [blank_start]the same as[blank_end] the backward reaction and the concentrations [blank_start]remain constant[blank_end].
Respuesta
the same as
greater than
less than
remain constant
alter
Pregunta 11
Pregunta
In [blank_start]homolytic[blank_end] fission, 2 radicals are formed.