Atoms + Bonding
Polarity and IMF
Reactions (Types)
Balancing Reactions
Lies and Lab
100
Type of matter (element/molecule/homogeneous/heterogeneous):
1) 3% solution of hydrogen peroxide
2) reese's peanut butter cup
1) What is a homogeneous mixture?
2) What is a heterogeneous mixture?
100
Cl2 (Structure: Cl-Cl, straight).
Polar or nonpolar?
NONPOLAR molecule
100
(CHEMICAL OR PHYSICAL CHANGES?)
(A) Gasoline is dangerous because it easily evaporates to fill a given space with flammable vapors.
(B) Carbon monoxide kills by bonding irreversibly to red blood cells.
(C) Ink moves up the paper during TLC.
What is (A) physical; (B) chemical; (C) physical
100
Balance:
Na + Cl2 → NaCl
2Na + Cl2 → 2NaCl
100
The way in which scientific studies are evaluated by one or more people of similar competence to the producers of the work. It constitutes a form of self-regulation.
What is the peer review process.
200
Rutherford shocked the scientific world with his gold foil experiment, when it discovered this.
What is the central nucleus of the atom?
200
SO2 (Structure: O-S-O, BENT).
Polar or nonpolar?
POLAR molecule
200
The type of reaction shown below (of the 5 types):
carbon dioxide + carbon → carbon monoxide
What is SYNTHESIS rxn?
200
Balance:
Silver(I) fluoride + calcium chloride → silver(I) chloride + calcium fluoride
2AgF + CaCl2 → 2AgCl + CaF2
200
In the iron ink lab, iron went from an oxidation state of 2+ to an oxidation state of 3+. Iron has undergone this form of redox chemistry.
What is oxidation?
300
The ion in this list that cannot possibly exist:
a) H2+
b) O2+
c) Mg2+
What is H2+?
300
HCN (Structure: H-C-N, straight).
Polar or nonpolar?
Polar molecule
300
The type of reaction shown below (of the 5 types):
HNO3 + Al(OH)3 → Al(NO3)3 + H2O
What is DOUBLE DISPLACEMENT rxn?
300
Balance:
AlF3 + HgCl2 → AlCl3 + HgF2
2AlF3 + 3HgCl2 → 2AlCl3 + 3HgF2
300
Many people believe they suffer harmful side effects from consuming MSG, but scientists are unable to trigger these effects in controlled studies. This is an example of the _____________ effect in action.
What is the nocebo effect
400
The formula for iron(III) bromide.
What is FeBr3?
400
DAILY DOUBLE!
What is the "tripod" structure?
400
The type of reaction shown below (of the 5 types):
copper + silver(I) chloride → copper(I) chloride + silver
What is SINGLE DISPLACEMENT rxn?
400
Balance:
HNO3 + Al(OH)3 → Al(NO3)3 + H2O
3HNO3 + Al(OH)3 → Al(NO3)3 + 3H2O
400
Elemental iodine (I2) was found in this layer of the oil/water lab, because they both share this IMF type.
2 part answer!
What is oil layer + induced dipole/induced dipole IMF?
500
The name for P2O5
What is diphosphorus pentoxide?
500
This kind of intermolecular force holds SeCl6 molecules together.
What is induced dipole/induced dipole?
500
The type of reaction shown below (of the 5 types):
lead(II) nitrate → lead(II) oxide + nitrogen dioxide + oxygen gas
What is DECOMPOSITION rxn?
500
Balance:
aluminum(III) oxide → aluminum + oxygen
2Al2O3 → 4Al + 3O2
500
This type of observational study is based on outcome status - the history of groups with/without a given disease are studied to look for potential disease triggers.
What is a retrospective study?