Chapter 2 Re-Take Review

What is the chemical symbol of water?

• H2O

• CO2

• O2

• N2

True or False: Hydrogen bonds are very weak, which allows for many of the chemical characteristics found in water.

• True

• False

What is cohesion?

• The ability of a molecule to "stick" to itself

• The ability of a molecule to "stick" to other molecules

• Large amounts of energy are required to change the temperature of a substance

• A well-organized and efficient team

What about the chemical structure of water causes many of the critical properties that support life on Earth?

• Hydrogen Bonds

• Cohesive behavior

• Polarity

• Expansion Upon Freezing

What do the green bonds represent?

• Covalent Bond

• Hydrogen Bond

• Ionic Bond

What characteristic is shown in the image?

• Polarity

• Hydrogen Bonds

• Cohesion

• Adhesion

What property of water allows for water to act as a temperature regulator for the world?

• Cohesive Behavior

• Expansion Upon Freezing

• High Specific Heat

• Universal Solvent

What property of water causes these Alka-Seltzer tablets to dissolve?

• Universal Solvent

• Expansion Upon Freezing

• Cohesive Behavior

• High Specific Heat

A ______________ is a large molecule.

• Micromolecule

• Polymer

• Amino Acid

• Macromolecule

Which of the following elements are found in all macromolecules? (Select all that apply).

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