Chemistry Week 4
Chapter 4 discussion:
Why is molarity (M) a useful unit in aqueous reaction chemistry?
Molarity is the ratio of moles of solute in a solution to the volume of the solution. Based
on the volume of solution and its concentration, we can mat
Chemistry Week 6
Why do some reaction mixtures feel warm to the touch whereas others feel hot to the
touch? What is happening at a molecular level that explains this?
The more exothermic a reaction, the more heat we would feel if we were to touch the
Chemistry Week 10
Why is the octet rule so useful to chemists?
The octet rule is a simple chemical rule of thumb that states that atoms tend to combine in
such a way that they each have eight electrons in their valence shells, giving them the
Chemistry Week 14
Why do reactions tend to slow down as the temperature is decreased?
Chemical equilibrium takes longer to occur when temperature is decreased; therefore the
rate of reaction is slowed. Since the solution is trying to achieve equilibrium,
Chemistry Week 13
Why would gas solubility depend on temperature and pressure?
As the temperature increases, the solubility of a gas decreases. More gas is present in a
solution with a lower temperature compared to a solution with a higher temperature. If
Chemistry Week 12
What substance properties does intermolecular forces allow you to predict?
Given the property of solids, liquids (take shape container, can be poured, etc) and gases
(fill their container), we surmised that the molecules in a solid and l
Chemistry Week 11
How are molecular geometries predicted using electronic structures?
By evaluating the electron structures of the central atom and determining a sp3, sp2, sp
structure, we can predict the molecular geometry based on the known possibilitie
Chemistry Week 7
What experimental evidence have you seen that convinces you that electrons are not
randomly arranged around atoms?
Since each shell has an integer of n orbitals, there are many different planes on which
electrons can and do orbit around t
Chemistry Week 8
Explain why elements in the same group in the periodic table display remarkably similar
properties using electronic structure in your analysis.
Elements in the same group in the periodic table tend to display remarkably similar
Chapter 1 discussion:
How do you know that a chemical change has occurred when an egg is cooked whereas
no chemical change has taken place when pure water is boiled?
Pure water can go from a solid to liquid to gaseous state which depends
Chemistry Week 5
Chapter 5 discussion:
Why dont real gasses obey the ideal gas law (PV=nRT)?
Real gases exert forces on one another and they have volume, which would contradict the
ideal gas law.
P .00 atm
16.73 C 289.88 K
Chemistry Week 3
Chapter 3 discussion:
Why cant the coefficients in chemical equations simply be interpreted in mass units?
They do not represent the amount of atoms in each molecule or the actual mass of each
molecule as it pertains to the equation.
Chemistry Week 2
Chapter 2 discussion:
How do molecules differ from atoms?
Atoms are the basic unit of an element. A molecule is an aggregate or at least 2 atoms in
a definite arrangement held together by chemical forces of bonds. Basically, the atom is