Chem Unit 3 Review

In ionic bonds electrons are (a)  

In covalent bonds electrons are ​ (b)   ​

• completely given/taken.
• shared between atoms.

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​ (a)   compounds electrons are shared evenly.

(b)   compounds electrons favor one atom more than another.

• Non-Polar
• Polar
• Ionic
• Covalent
• Metallic

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Click on the partial positive area of HCl.

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Click on the partial negative area of H2O.

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Organize the following bonds as ionic or covalent.

Groups:

(a) Covalent

,

(b) Ionic

• H-C

• P-H

• Ti–O

• O–Mg

• K–Cl

• N–N

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Organize the following bonds as polar or non-polar.

Groups:

(a) Polar

,

(b) Non-Polar

• H–F

• C–O

• H–H

• S–H

• C–H

• Cl–Br

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Match the following elements with the correct number of valence electrons.

• 4

• Al

• 3

• C

• 2

• P

• 1

• Sr

• 5

• H

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Match the following elements with the correct number of valence electrons.

• 8

• Ar

• 7

• I

• 5

• Si

• 4

• N

• 6

• O

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Draw a lewis dot structure for the following molecule.

(H, H, O)

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Organize the following ions into cations and anions.

Groups:

(a) Cations (+)

,

(b) Anions (-)

• Bromide

• Potassium

• Magnesium

• Aluminum

• Calcium

• Fluoride

• Lithium

• Sulfide

• Chloride

• Nitride

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