WorksheetsAP Chemistry Unit 1 Review
Total questions: 15
Worksheet time: 30mins
A 5.00 g sample of a compound consisting of calcium and chlorine contains 1.82 g of calcium and 3.23 g of chlorine. What is the empirical formula?
CaCl2
Ca2Cl4
Ca2Cl2
Ca4Cl2
How many molecules are in 2.5 mol of NaCl?
1.5 x 1024 molecules
1.5 molecules
4.15 molecules
1.5 x 1023 molecules
Which of the following answer choices provides a correct prediction and justification for relative differences in the first ionization energies of hydrogen and lithium?
The first IE for lithium is greater than that of hydrogen because lithium has more protons in its nucleus
The first IE for lithium is greater than that of hydrogen because the radius of the 1s orbital in lithium is smaller than the 1s orbital in hydrogen.
The first IE for lithium is less than that of hydrogen because lithium has a smaller atomic radius.
The first IE for lithium is less than that of hydrogen because hydrogen has a smaller atomic radius.
An example of an electron configuration of a transition metal is __________.
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p6 3s2 3p6 4s2 3d8
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
1s2 2s2 2p4 3s1
A particle with 15 protons and 18 electrons would be symbolized as:
P3+
Ar
Ar3-
P3-
Ar3+
Of the choices below, which gives the order for first ionization energies?
Cl > S > Al > Ar > Si
S > Si > Cl > Al > Ar
Al > Si > S > Cl > Ar
Cl > S > Al > Si > Ar
Ar > Cl > S > Si > Al
What is the percent composition of a compound that contains 40.8 g carbon and 54.4 g oxygen?
42.9 %; 57.1% oxygen
52.9 %; 57.1% oxygen
42.9 %; 45.23% oxygen
55.9 %; 99.1% oxygen
What is the mole ratio between Nitrogen and Ammonium in the above reaction?
