Review: Chemistry of Life

Molecule in which opposite ends have opposite electric charges

• cohesion
• polar molecule
• hydrogen bond
• solution

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

Which correctly describes the smallest amount of an element?

• Atom

• Molecule

• Compound

• Proton

What are atoms composed of?

• Protons and electrons.

• Protons, neutrons, and electrons.

• Neutrons and electrons.

• Ions, elements, and compounds.

Two or more atoms chemically bonded together are called a

• atom
• element
• molecule
• mixture

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

What is cohesion?

• Water's ability to stick to itself
• Water's ability to stick to other substances
• The strength of the cohesion of all the water molecules combined
• Tape, glue and other adhesives

__________ are organic compounds that are good sources of energy. They contain carbon, hydrogen, and oxygen

• Protein

• Lipids

• Carbohydrates

• Nucleic Acids

Simple sugars, or monosaccharides, such as glucose are the building blocks of

• Lipids

• Carboydrates

• Protein

• Nucleic Acids

The building blocks of ______ are fatty acids, which contain a carboxyl group and a hydrocarbon chain.

• Proteins

• Carbohydrates

• Lipids

• Nucleic Acids