1. Attraction between substances of the same kind is called-

• adhesion
• cohesion
• polarity
• gravity

2. Attraction between different substances is called-

• adhesion
• cohesion
• polarity
• gravity

3. Surface tension

• a mixture in which all substances are evenly distributed
• allows a needle to float on water
• dissolve best in water
• cell membranes are made of these

4. solution

• a mixture in which all substances are evenly distributed
• allows a needle to float on water
• dissolve best in water
• cell membranes are made of these

What type of interactions hold water molecules together?

• hydrogen bonding
• ionic bonding
• nonpolar bonding
• bipolar bonding

Water and oil are placed in the same vessel and stirred. The reason that oil and water will not mix is because

• water is nonpolar and oil is polar
• both water and oil are polar
• both water and oil are nonpolar
• water is polar and oil is nonpolar

What prevents a lake from freezing solid?

• hydrogen bonding is unable to freeze an entire body of water
• the solid form of water floats on the liquid form
• a water molecule is cohesive but not adhesive
• liquid water contains an excessive amount of suspended nutrients

Which statements concerning the characteristics of water are correct? (there are two answers)

• water releases heat when it evaporates
• the solid form of water floats in the liquid form of water
• water is a nonpolar substance
• water is cohesive and adhesive allowing for hydrogen bonding
• the pH of pure water is 8.

Capillary action is the process of water molecules moving upwards through a narrow tube, such as a plant stem. What characteristic of water causes this process?

• adhesion
• surface tension
• solubility
• hydrogen bonds

Which of the following is a correct statement?

• oil is a polar substance that attracts other polar substances
• a polar substance can easily be dissolved in a nonpolar substance
• a polar molecule has the ability to dissolve in another polar molecule
• water is a nonpolar substance that can dissolve polar substances