Physical Science Chapter 9 Study Guide

What role do carbon compounds play in a whale's cells?

• They form the structures and control reactions

• They provide energy

• They store waste

• They transport oxygen

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The instructions for cellular processes in a whale's cells are stored in ______.

• Proteins

• Lipids

• DNA

• Carbohydrates

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What elements are commonly found in organic compounds?

• A) Carbon and hydrogen

• B) Oxygen and nitrogen

• C) Helium and neon

• D) Sodium and chlorine

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Organic compounds make up more than ___ percent of all known compounds.

• 50

• 70

• 90

• 100

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Which of the following is a possible bonding configuration for a carbon atom?

• Four double bonds

• Four single covalent bonds

• Two triple bonds

• Two double bonds

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Fill in the blank: Most of the bonds in organic compounds are either carbon-to-carbon bonds or ________ bonds.

• carbon-to-oxygen

• carbon-to-nitrogen

• carbon-to-hydrogen

• carbon-to-sulfur

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Which of the following is a form of carbon?

• Diamond

• Quartz

• Mica

• Talc

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Fill in the blank: Diamond, graphite, and _______ are forms of carbon.

• Silica

• Fullerenes

• Sulfur

• Phosphorus

What type of solid is diamond an example of?

• Ionic solid

• Network solid

• Metallic solid

• Molecular solid

Diamond is harder than other substances because cutting a diamond requires breaking many ______ bonds.

• Ionic

• Metallic

• Covalent

• Hydrogen