crude oil n hydrocarbons

Question 1

whats crude oil?

Answer 1

a non-renewable (finite) resource.

Question 2

hows crude oil formed?

Answer 2

from the fossilised remans of ancient plankton

Question 3

wheres crude oil found?

Answer 3

in rocks and is use to produce fuels and other important chemicals.

Question 4

true or false? most of the compounds in crude oil are hydrocarbons

Answer 4

true

Question 5

what are hydrocarbons?

Answer 5

molecules made up of only hydrogen and carbon atoms

Question 6

hydrocarbons differ in the size which can change?..

Answer 6

the properties of the hydrocarbon.

Question 7

crude oil is a mixture of different compounds that aren’t…

Answer 7

chemically combined.

Answer 8

. The most important properties are:

Question 9

what does a hydrocarbons size affect?

Answer 9

its properties

Question 10

A hydrocarbon’s properties affect?

Answer 10

how useful it is as a fuel.

Question 11

the most useful properties of a hydrocarbon are:

Answer 11

viscosity
boiling point
+
flammability.

Question 12

are hydrocarbons with longer chains less or more flammable?

Answer 12

less

Question 13

true or false hydrocarbons with longer chains have higher boiling points.

Answer 13

true

Question 14

do hydrocarbons with longer chains have a higher or lower viscosity? (e.g they’re thicker n flow less easily)

Answer 14

a higher viscosity.

Question 15

short chain hydrocarbons have-

Answer 15

lower boiling points
lower viscosity
and are more flammable

Question 16

whats the boiling point?

Answer 16

the temperature at which the hydrocarbon boils. this relationship supports the fractional distillation.