Question

Crude oil can be separated into its constituent parts based on their boiling points. What technique uses this principle?
Question 8 options:

A)

filtration

B)

distillation

C)

centrifugation

D)

chromatography

Answer 1

@arronq

Answer 2

You should look these words up on the internet, it's pretty self-explanatory once you know what they are - i'd hate to rob you of the privilege of knowledge lol

If you want to double check, you can ask

Answer 3

is it D?

Answer 4

no, chromatography is a general word used for a lot of different processes, but the answer here is distillation - it involved heating a substance to evaporate compounds sequentially based on their BPs

Answer 5

https://www.youtube.com/watch?v=3pL2X-8-eVk

this explains what distillation is in further detail

Answer 6

oh my bad, but thank you i suck in this subject

Answer 7

i have one last question

Which is a chemical property of vinegar?
Question 12 options:

A)

pH is about 2.4

B)

freezes around 2 degrees Celsius

C)

it is a transparent liquid

D)

it boils at 100 degrees Celsius

Answer 8

no problem, people learn at different rates.

For this one, you need to know how to distinguish between physical and chemical properties. Take a look at this

http://www.iun.edu/~cpanhd/C101webnotes/matter-and-energy/properties.html

Answer 9

would the answer to this be A? sense PH is part of a chemical property

Answer 10

\(\huge \checkmark\)

Answer 11

that's right, pH is a measure of \(H^+\) ions in a solution

Answer 12

yay i got one right lol thank you so much for helping me

Answer 13

no problem !