Unit 6 Structure of Matter/Bonding Review

When an atom loses an electron it forms a(n)

• anion.
• cation.
• polyatomic ion.
• neutral ion.

The charge on a chloride ion in AlCl3 is

• 1+
• 1-
• 3+
• 3-

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NGSS.HS-PS1-1

Which pair has the same electron configuration?

• Cl- and Ar
• Cl- and Ar-
• Cl and Ar
• Cl+ and Ar

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NGSS.HS-PS1-1

A chemical bond that forms when atoms share electrons is always a(n)

• polar bond.
• ionic bond.
• metallic bond.
• covalent bond.

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NGSS.HS-PS1-1

When two fluorine atoms share a pair of electrons, the bond that forms is a(n)

• polar covalent bond.
• ionic bond.
• nonpolar covalent bond.
• double bond.

The attraction among water molecules is stronger than the attraction among

• sodium and chloride ions.
• carbon dioxide molecules.
• the atoms in a polyatomic ion.
• atoms in a diatomic molecule.

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NGSS.HS-PS1-3

When is an atom least likely to react?

• When the lowest occupied energy level has no electrons
• When the highest occupied energy level has no electrons
• When the lowest occupied energy level is filled with electrons
• When the highest occupied energy level is filled with electrons

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many dots should indium have for its electron dot diagram?

• 49
• 3
• 2
• 13
• 4

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NGSS.HS-PS1-1

Which of the following is not an ionic compound?

• Potassium bromide
• Sulfur dioxide
• Indium oxide
• Iron (III) chloride

What will the ratio of ions be in any compound formed from metals in Group 2 and nonmetals in Group 17? Answers are in the format of Group 2 ions : Group 17 ions

• 1:2
• 2:1
• 2:17
• 7:2
• 2:7

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NGSS.HS-PS1-7