organic chemistry
atoms
thermodynamics & spectroscopy
in the lab
tim's choice
100
name this
methane
100
Organic chemistry is the study of compounds containing which element?
Carbon
100
The measure of disorder in the universe is called? You have to name it and the letter which represents it.
entropy(S)
100
name all three pieces of equipments
beaker, erlenmeyer flask, graduated cylinder
100
which of the following is NOT a science?
chemistry, physics, biology, astrology
biology lol
200
name this
acetic acid
200
carbon is excreted out of our body mostly through breathing it out. Which atom is excreted out of our body through pee, in the form of urea?
Nitrogen
200
In a flame, light is emitted by excited electrons relaxing back to lower states. When this happens, what particle does it emit?
Photon
200
what is the main purpose of a chemical hood?
To prevent vapors in the hood from escaping and contaminating the air
200
which of the following is not a popular organic reaction? you only have one guess each.
diels-alder reaction
aldol condensation
suzuki reaction
zureig-ulrich reaction
friedel-crafts alkylation
zureig-ulrich reaction
300
how many oxygen atoms are in a molecule of acetone?
1
300
The lightest metal atom, commonly used in rechargeable batteries is?
Lithium
300
True or false(and explain): when an exothermic reaction takes place, the internal system not only loses energy to the surrounding, it technically loses a bit of weight.
True
300
you just made something in the lab! Name 3 pieces of instruments you can use to analyze it! Limited to instruments you can find in a chemistry lab!
NMR, IR, UV Vis, MS, HPLC, GC, etc.
300
most rocks can be classified as 2 types of rocks: carbonates and what?
silicates
400
name this functional group
phenyl
400
The element that forms these crystals after melting & subsequent crystallization is?
Bismuth
400
You feel cold because your body temperature is at 35C, so you put on a jacket. After some time, an equilibrium is established such that your body temperature is constantly at 38C. The rate of heat loss of your body to your surroundings has increased, decreased, or stayed constant?
Constant
400
the rotary vaporizer is able to evaporate residual solvents from whatever you are trying to purify. Which two main parameters can you change in order to influence how rapidly the solvent is evaporated?
temperature and pressure
400
mixing bleach and rubbing alcohol creates what dangerous organic solvent?
Chloroform
500
Weed buds are usually baked in the oven in order to increase its potency before consumption. The decarboxylation of THCA in crude marijuana to make THC releases what compound?
CO2
500
Every element heavier than this element will eventually decay to this element. What is it? In other words, every element heavier than this element has no stable isotope.
Lead
500
In IR spectroscopy, the peak of water is large and broad. Explain why. Briefly.
Because there are many energy states due to hydrogen bonds
500
why are blue lazers so dangerous? explain briefly
because blue photons have higher energy than most other photons
500
what is the difference between LDPE and HDPE?
HDPE has less branching