Last Review Day Questions

What is the Lewis electron dot structure for the covalent compound sulfur dioxide?

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Electron Configurations (6D)

Which statement is a chemical property of copper?

• It is a mineral.

• It is a liquid at 1083 °C.

• It reacts with nitric acid

• It is malleable and ductile.

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properties /changes of matter (4A)

What is the number of atoms in three grams of gold?

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Mole conversions (8B)

FInd the percent composition by mass of lithium in lithium chloride (LiCl).

• 15.0%

• 16.4%

• 19.6%

• 83.6%

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Classification of matter (4D)

Gold is classified as a pure substance. Which of its properties supports this classification?

• Gold occurs in nature as a solid.

• Gold is resistant to rust and tarnish.

• Gold has a high melting point.

• Gold is made of one kind of atom.

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Classification of matter (4D)

Which statement correctly characterizes a property of the alkaline earth elements, Group 2A on the Periodic Table?

• They are found in nature as free elements.

• They readily lose two valence electrons.

• Their electron configuration ends with s1.

• They have an oxidation state of +1.

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Periodic Table Groups/Families (5B)

The Electron Sea Model explains why metals —

• are excellent conductors

• are very reactive

• accept electrons easily

• form ionic compounds

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Metallic bonding (7D)

Matter can exist as a solid, a liquid or a gas. The solid state is distinguished by its ability to —

• be easily compressible

• take the shape of a container

• have particles of low density

• maintain an ordered pattern

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States of matter (4C)

• Pentaphosphorus dioxide 

• Decaphosphorus pentoxide 

• Diphosphorus pentoxide 

• Diphosphorus monoxide  

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Naming Covalent Compounds (7A)

Which represents the ground state electron configuration for manganese?

• A

• B

• C

• D

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Electron Configurations (6D)