Chemical Bonds and Chemical Reactions - Goal 6.02

What is the total number of valence electrons in an atom of phosphorus?
1. 3
2. 2
3. 7
4. 5
In which group does each element have a total of four electrons in the outermost principal energy level?
1. 1 (IA)
2. 14 (IVA)
3. 16 (VIA)
4. 18 (0)
Which is the electron configuration of the sulfur atom?
1. 2-8-6
2. 4-6-2
3. 2-8-8
4. 2-8-4
How does an atom of aluminum become an ion?
1. It gains 3 electrons.
2. It loses 3 electrons.
3. It gains 3 protons.
4. It loses 3 neutrons.
When a chlorine atom gains an electron, it becomes
1. a molecule with a +1 charge
2. an ion with a +1 charge
3. an ion with a -1 charge
4. a molecule with -1 charge
When an atom of sulfur gains two electrons, it becomes an ion with a charge of
1. I-
2. 2-
3. 1+
4. D+
Atoms become positive ions by
1. gaining electrons
2. losing electrons
3. gaining protons
4. sharing electrons
Which type of bond is formed by the transfer of electrons from one atom to another?
1. an ionic bond
2. a covalent bond
3. a hydrogen bond
4. metallic bond
The transfer of electrons from sodium atoms to chlorine atoms results in the formation of
1. hydrogen bonds
2. ionic bonds
3. metallic bonds
4. covalent bonds
Which compound is most ionic?
1. KF
2. CO
3. HBr
4. NO
Which element would most likely form an ionic bond with chlorine?
1. N
2. K
3. O
4. S
Which kind of bond is formed when two atoms share electrons to form a molecule?
1. covalent
2. metallic
3. ionic
4. hydrogen
Metallic bonding occurs between atoms of
1. neon
2. fluorine
3. sulfur
4. copper
Which type of bond is present in copper wire?
1. metallic
2. covalent
3. ionic
4. hydrogen
Which type of bonding involves positive ions in a sea of moving electrons?
1. metallic
2. hydrogen
3. ionic
4. covalent
1. single replacement
2. decomposition
3. exchange of ions
4. synthesis
1. A
2. B
3. C
4. D
The type of equation shown above is an example of a (an)
1. single replacement
2. direct union
3. decomposition
4. exchange of ions
What kind of reaction is shown above?
1. direct union
2. single replacement
3. decomposition
4. exchange of ions
1. synthesis
2. single replacement
3. decomposition
4. exchange of ions
1. 4
2. 1
3. 3
4. 2
1. 6
2. 1
3. 2
4. 3
Which is a correctly balanced equation for a reaction between hydrogen gas and oxygen gas?
1. A
2. B
3. C
4. D
1. A
2. B
3. C
4. D
Which diagram represents an ion?
1. A
2. B
3. C
4. D

Chemical Bonds and Chemical Reactions - Goal 6.02 - 6.03

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