Cohesion and Adhesion

Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?

• adhesion

• surface tension

• solvent properties

• nonpolar

Attractions between water molecules are called

• Covalent bonds

• Ionic bonds

• Polar bonds

• Hydrogen bonds

What type of bond is found BETWEEN water molecules?

• hydrogen bonds

• ionic bonds

• nonpolar covalent bonds

• polar covalent bonds

What word describes when water is attracted to other substances?

• cohesion

• adhesion

• capillary action

• surface tension

Which statement explains why water molecules stick together?

• both sides are negative

• one side has a positive charge and the other side has a negative charge

• one side has a negative charge adn the other side has a neutral charge

• both sides are positive

Why can water have no net charge but have slight charges in different parts of the molecule?

• The oxygen end is slightly negative and the hydrogen end is slightly positive

• The hydrogen end is slightly negative and the oxygen end is slightly positive

• The hydrogen and oxygen ends change in polarity

• Because it is hydrophobic

Which of the following is the CORRECT list of water's properties?

Read Carefully!

• adhesion, cohesion, high specific heat, universal solvent

• adhesion, cohesion, low specific heat, universal solvent

• adhesion, no cohesion, low specific heat, universal solute

• no adhesion, cohesion, high specific heat, universal solute

Which property of water allows it to form droplets on a leaf?

• Cohesion

• Adhesion

• Surface tension

• Capillary action

What is the main difference between cohesion and adhesion?

• Cohesion is the attraction between different substances, adhesion is the attraction between similar substances

• Cohesion is the attraction between similar substances, adhesion is the attraction between different substances

• Cohesion involves ionic bonds, adhesion involves covalent bonds

• Cohesion occurs in solids, adhesion occurs in liquids

Which experiment would best demonstrate the concept of adhesion?

• Observing water droplets on a waxed car surface

• Measuring the height of water in a capillary tube

• Floating a needle on water

• Mixing oil and water