Chapter 2 - Book Quiz

A _______________ is a substance that dissolves in a _________________

solute ; solvent

How many other molecules can water bond with at one time: 1, 2, 3, 4

3

What is the maximum number of covalent bonds a carbon molecule can have: 2, 3, 4, 6

4

Order the substances from smallest to largest: atom, polymer, monomer

Atom, monomer, polymer

True or False: Cohesion is the attraction between two water molecules due to hydrogen bonding

True

True or False: Monomers are linked together to make polymers

True

True or False: The oxygen side of a water molecule has a partial negative charge

True

True or False: oxygen is more electronegative than hydrogen

True

Choose the best description of polarity: a.) A permanent state of a molecule b.) A sharing of electrons between two atoms c.) A difference in charge between two atoms d.) A difference in charge between two atoms or molecules

a.) A permanent state of a molecule

All four biomolecules include which element: a.) Carbon b.) Sodium c.) Helium d.) Potassium

a.) Carbon

Water droplets combining on a windshield is an example of which property of water: a.) Cohesion b.) Adhesion c.) Surface tension d.) High heat capacity

a.) Cohesion

Match the example with the correct vocabulary word: a.) Hydrophilic - sugar or oil b.) Hydrophobic - sugar or oil

a.) Hydrophilic - Sugar b.) Hydrophobic - Oil

Dehydration synthesis removes which substance(s) from a monomer chain: a.) Water b.) Oxygen c.) Two carbons d.) Carbon dioxide

a.) Water

Salt dissolves in water. Why is salt a good example of water being a universal solvent: a.) Sodium is ionically bonded, making it polar b.) Sodium has polar covalent intramolecular bonds c.) Sodium has polar covalent intermolecular bonds d.) Sodium creates hydrogen bonds with the hydrogens in water

a.) sodium is ionically bonded, making it polar

Water clinging to the glass of a graduated cylinder is an example of which property of water: a.) Cohesion b.) Adhesion c.) Universal Solvent d.) High heat capacity

b.) Adhesion

Amino acids have a variety of chemical characteristics. Why are there so many R-groups: a.) Take the place of monomers b.) Allow protein to have various complex functions c.) For different biomolecules d.) Reduces dehydration

b.) Allow protein to have various complex functions

The weak bond type between two water molecules is an example of which bond type: a.) Ionic b.) Hydrogen c.) Polar covalent d.) Nonpolar covalent

b.) Hydrogen

Which of the biomolecules does not have a distinct subunit: a.) Proteins b.) Lipids c.) Nucleic Acids d.) Carbohydrates

b.) Lipids

Which monomer builds proteins: a.) Lipids b.) Nucleotides c.) Amino Acids d.) Monosaccharides

c.) Amino Acids

The bond between the oxygen and hydrogen atoms of a water molecule are examples of which bond type: a.) Ionic b.) Hydrogen c.) Polar covalent d.) Nonpolar covalent

c.) Polar covalent

Particles will diffuse in solution until they ________________ a.) Become separated b.) Reach maximum concentration c.)Reach equilibrium d.) Are removed

c.)Reach equilibrium

Rubbing alcohol evaporates faster than water when spilled on a table. This is an example of which property or water: a.) Cohesion b.) Adhesion c.) Universal Solvent d.) High heat capacity

d.) High heat capacity

Match each monomer to polymer: Monomers - Protein, Lipids, Carbohydrates, Nucleic Acids Polymers - Nucleotides, Monosaccharides, Noting, Amino acids

Proteins - Amino Acids Lipids - Nothing Carbohydrates - Monosaccharides Nucleic Acids - Nucleotides

Order the substances from smallest to largest: atoms, subatomic particles, biomolecules, molecules

Subatomic particles, atoms, molecules, biomolecules

True or False: All proteins can mix with aqueous solutions.

False

True or False: In solid water, hydrogen bonds are dynamic until the solid returns to its liquid state

False

True or False: Substances diffuse from areas of low concentration to high concentration.

False

True or False: Unlike other substances, water as a solid is more dense than it is as a liquid state

False

True or False: Water dissolving oil is an example of water being a universal solvent

False

What type of bond is created within a water molecule?

Polar covalent