This substance has a pH of 7
H2O
A chemical reaction where ΔH is negative
Exothermic
Nucleus
An element that is present in all organic compounds
Carbon
Analytical method to determine the concentration of unknown solution from a known solution
Titration
A substance that reduces the activation energy of a reaction without being consumed is known as a
Catalyst
Atoms of the same element but different number of neutrons are
Isotopes
The only two elements that are liquid at room temperatures
Bromine and Mercury
A substance that can act as both an acid and a base
Amphiprotic Substance
ΔHf°, is the symbol for
Standard Heat of Formation
The reason why carbon has an atomic number of 6
It has 6 protons.
This scientist led the discovery of polonium and radium and championed the use of radiation in medicine
Marie Curie
The equation to determine the pH of a buffer
Henderson-Hasselbalch Equation or pH = pKₐ + log([A⁻]/[HA])
State two of the Laws of Thermodynamics.
1. Energy can be converted but cannot be created nor destroyed. 2. For spontaneous process, the entropy of the universe increases. 3. A perfect crystal at zero Kelvin has zero entropy.
Name all the intermolecular forces!
Dipole-dipole, Hydrogen Bonding, London Dispersion Force
Which current MIT Chemistry faculty has a Nobel Prize in Chemistry?
Professor Moungi Bawendi!
Which of the following has the weakest conjugate base
a. HCl
b. H2O
c. NaOH
d. CH3OOH
HCl
What is the half-life of Bi (bismuth)?
a. 2 x 1017
b. 2 x 1018
c. 2 x 1019
d. 2 x 1020
c. 2 x 1019
How many protons does Ni have?
28
Element found in the structure of vitamin B12
Cobalt