Intro + Chapter 1
Chapter 2: Atoms and Substances
Chapter 3: Atomic Structure
The Periodic Table and Molecular Geometry
Chemical Bonding
100
How many significant figures are in the following measurement?
4.0904 m
5
100
Which scientist created the plum pudding model of the atom?
J. J. Thompson
100
State the full electron configuration of iron (Fe)
1s22s22p63s23p64s23d6
100
What entire group of elements was left out of Mendeleev's original periodic table? Why?
The noble gasses- they had not been discovered yet because they are so stable/unreactive
100
Name one difference between ionic and covalent bonds
answers may vary
200
Which of these measurements is the most precise?
a) 2.04 m
b) 3.1 m
c) 1.267 m
c - it has the highest number of sig figs
200
Which scientist created the planetary model of the atom?
Niels Bohr
200
State the condensed electron configuration of titanium (Ti)
[Ar]4s23d2
200
What is electronegativity?
An atom's attraction to the electrons in a bond
200
What is the octet rule?
Elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
300
What is the difference between accuracy and precision?
Accuracy is determined by how close a measurement is to reality, while precision is determined by the number of sig figs in a measurement
300
What is the difference between a compound and a mixture?
A compound consists of two or more elements that are bonded chemically, while a mixture consists of two or more substances that are mixed together but not bonded.
300
How many electrons can a p subshell hold?
6
300
How can you determine if a covalently bonded molecule is polar or nonpolar?
Determine the electronegativity values of the elements involved and take the difference of them. If the difference is below 0.5, the bond is nonpolar; if the difference is between 0.5 and 1.7, the bond is polar.
300
Write the chemical formula for Tin (IV) sulfide
SnS2
400
Convert 498 nm to m
4.98 x 10-7 m
400
Calculate the molar mass of sucrose, C12H22O11
342.30 g/mol
400
A lab sample consists of 4.58% H, 40.92% C, and 54.51% O. Determine the empirical formula for this substance
C3H4O3
400
Why is a bent molecular geometry bent?
The lone pairs of electrons pull away from the central atom more strongly than the bonded pairs. This causes the angles between the bonded pairs to decrease, resulting in a bent shape.
400
Name the following compound: MnSO4
Manganese (II) Sulfate
500
Convert 87.21 L/s to mL/min
5.233 x 106 mL/min
500
Determine the number of moles present in 2.111 kg of KCl
28.32 moles
500
A compound has an empirical formula of CH2O and a molar mass of 120.12 g/mol. Determine the molecular formula for this compound.
C4H8O4
500
Determine the molecular geometry of ammonia, NH3
trigonal pyramidal
500
Draw the Lewis Structure for Arsenic tribromide, AsBr3
