2.10 Test Study Guide: The Chemistry of Life

Which statement is true of all organic compounds?

• All contain carbon

• All contain nitrogen

• All are hydrophobic

• All are carbohydrates

Atoms of which three elements could bond together to form an organic compound?

• oxygen, iron, carbon

• oxygen, hydrogen, nitrogen

• carbon, iron, nitrogen

• carbon, hydrogen, oxygen

Tags

NGSS.HS-LS1-6

Which phrase best describes the role carbon plays in the structure of compounds present in living things?

• no role

• minimal role

• somewhat important role

• fundamental role

Tags

NGSS.HS-LS1-6

Which type of bond holds atoms together in a water molecule?

• ionic bond

• covalent bond

Which property of water is likely the most significant in water’s role as a universal solvent?

• water molecules have positive and negative sides

• water can exist in three states of matter

• water contains oxygen atoms

• water molecules have covalent bonds

Which statement best explains why a carbon atom can bond with itself easily?

• It is an organic element

• It is an ion

• It forms hydrogen bonds

• If has four valence electrons

Why is carbon present in so many types of molecules?

• It is abundant on earth

• It can form up to four covalent bonds

• It has valence electrons

• It can become an ion

Tags

NGSS.HS-LS1-6

NGSS.HS-LS2-5

The dots in each diagram represent valence electrons orbiting the nucleus of an atom.

Which diagram shows the valence electron pattern for a carbon atom?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which atom is a carbon atom?

• A

• B

• C

Tags

NGSS.HS-PS1-1

Which outcome is a direct result of hydrogen bonding?

• cohesion and adhesion

• polar ends of water molecules

• bent structure of hydrogen atom

• movement by osmosis