Chemistry 4.11 Mid-Unit Test Review: Chemical Bonding
Electrostatic forces hold which of the following together?
----
Which of the following is the correct name for a compound with two iron atoms and one oxygen atom?
----
Which of the following is true about SO42-?
----
Which of the following statements best explains why a salt solution conducts electricity?
----
In the mineral beryl [BeAl2(SiO3)6] what is the ratio of beryllium to silicate (SiO3)?
1:2:6
What is a double bond?
2 covalent bonds between adjacent atoms in a molecule
How many valance electrons should you use to draw a Lewis structure of methane (CH4)? OR How many valance electrons should you use to draw a Lewis structure of ammonia (NH3)?
8
For the hypothetical compound AX3, which of the following statements is true?
A is a metal from Group 3A, and X is a nonmetal from Group 7A
Which of the following ions would represent the ion of an element from Group 2A?
A2+ OR E2+
A salt forms in the reaction of aluminum with chlorine. What is the most likely formula unit of this salt?
AlCl3
Which of the following ions will most likely form a precipitate when reacted with SO42-?
Ba2+
Which of the following pairs of elements would most likely combine to form a salt?
CS and I
In a Lewis Diagram for methane (CH4), which atom or atoms is inside , or central?
Carbon
Which of the following is a monatomic cation?
Cs^+
On the basis of chemical structure, which of the following solids will most easily conduct electricity?
Fe
Which of the following is a property of an ionic compound?
High melting point OR Brittle
Which of the following is a bond in which a metal transfers one or more electrons to a nonmetal?
Ionic bond
Which of the following is true about ammonium phosphate [(NH4)3PO4] ?
It is a salt of three polyatomic ammonium ions and one phosphate ion.
Which of the following happens when potassium forms an ion?
It loses an electron and has an octet in the next-lowest energy level.
Which of the following would have an electrostatic force of attraction between them?
K+ and P3-
Which of the following is a salt?
KCl OR CaCl2
Which of the following substances best conducts electricity in an aqueous solution?
Kcl
All of the following exist as a diatomic molecule except
Mg
In a piece of silver, where would you find the valence electrons?
Moving freely between the cations
The ionization energies (kJ/mol) of hydrogen (H), nitrogen (N), sodium (Na), and oxygen (O) are 1,312, 1,402, 1,681, and 1,314, respectively. Which element combination is least likely?
NaO-
On the basis of electronegativity, which of these pairs of elements is most likely to form polyatomic ions?
O and P
Which of the following ions is an oxyanion?
PO43-
In which of the following substances does sharing of electrons between two atoms occur?
PO4∧-3
On the basis of bonding, which of the following is true about potassium chloride when compared to sucrose?
Potassium chloride has a higher boiling point than sucrose.
Which of these pairs of elements is most likely to be part of a polyatomic ion?
S and O OR Cr and O
An atom of selenium (Se) forms a monatomic ion. Which of the following ions does is most likely form?
Se^2-
On the basis of bonding, which of the following compounds has the highest boiling point?
Sodium chloride OR Potassium fluoride
Which of the following best describes bronze?
a copper-tin alloy
Which of the following compounds contains a triple bond?
acetylene (C2H2)
The bond strength of compounds A, B, C, and D as measured by their bond energies (kJ/mol) 350, 500, 180, and 1,450, respectively. Which compound will most likely conduct electricity when dissolved in water?
compound D
Which of the following elements does not form a monatomic ion?
helium OR xenon OR argon
Which of the following intermolecular forces plays a pivotal role in the unique properties of water? OR Which of the following intermolecular forces plays a pivotal role in biological molecules such as proteins and DNA?
hydrogen-bonding
Which is the correct name of the compound Mn3(PO4)2?
manganese(II) phosphate
Which of the following rules would apply to the naming of CaCl2?
metal cation + nonmetal anion(-ide)
In an electron dot diagram of ethylene (C2H4) how many double bonds are present?
one
What is the molecular shape of silicon tetrabromide?
tetrahedron
