Study guide for Unit 5 and 6 Test (Chemistry Quiz)

As you move up from down a group of the periodic table, the atomic radii of the elements:

• increase

• remain constant

• decrease

• show no pattern

Based on the image below, which circle would best represent magnesium?

• A

• B

• C

• D

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Based on the periodic table, which group tends to have the lowest ionization energy and the highest respectively?

• halogens; alkaline earth metals

• alkali metals; noble gases

• alkaline earth metals; halogens

• noble gases; alkali metals

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NGSS.HS-PS1-1

An unknown metal, X, combines with nitrogen to form the compound X₃N. Metal X also combines with oxygen to produce X₂O. Metal X is most likely which of the following elements?

• Lithium, Li

• Magnesium, Mg

• Tin, Sn

• Gallium, Ga

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NGSS.HS-PS1-1

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Which of the following has the largest electronegativity value?

• Sulfur, S

• Phosphorus, P

• Barium, Ba

• Sodium, Na

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NGSS.HS-PS1-1

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Which Lewis electron dot diagram represents the bonding in sodium oxide?

• A

• B

• C

• D

• E

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When sodium reacts with fluorine to form the compound sodium fluoride, each fluorine atom:

• Gains one electron and becomes a negatively charged ion

• Gains two electrons and becomes a negatively charged ion

• Loses one electron and becomes a positively charged ion

• Loses two electrons and becomes a positively charged ion

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NGSS.HS-PS1-1

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What formula represents a nonpolar molecule containing polar covalent bonds?

• 1

• 2

• 3

• 4

Which substance contains a polar covalent bond?

• K₃N

• SO₃

• Ca₃P₂

• O₂

A covalent bond in which there is an unequal attraction for the shared electrons is:

• ionic

• dipolar

• nonpolar

• polar