Properties of Water

. A florist places a bouquet of white carnations in water containing blue dye. After a time, the flowers turn blue. What process helped the carnations to change color?

• water’s ability to form crystals

• . ability of H2O to dissolve NaCl

• cohesion and adhesion of water molecules

• formation of covalent bonds between hydrogen and oxygen molecules

Which of these statements correctly explains why water is a good solvent for many ionic compounds?

• A. Water is a polar compound.

• B. Water is an ionic compound.

• C. Water molecules are nonpolar.

• D. Water molecules completely separate into ions in solution.

What is the attractive force between two of the same kind of particle?

• A. adhesion

• B. capillary action

• C. cohesion

• D. polarity

Tags

NGSS.HS-PS1-3

 Which of the following is not a unique property of water?

• A. Water molecules stick together by cohesion.

• B. Frozen water is less dense than liquid water.

• C. Water molecules stick to other polar substances.

• D. Hydrogen bonds allow water to heat and cool very quickly.

Tags

NGSS.HS-ESS2-5

Water has the ability to store heat longer than other substances. What benefit does this property of water provide to organisms?

• A. It provides the ability to dissolve nonpolar compounds.

• B. It provides the appropriate catalyst for chemical reactions.

• C. It enables organisms to function with a higher cellular pH.

• D. It allows organisms to maintain a stable internal temperature.

Tags

NGSS.HS-LS1-3

Many fish and aquatic plants can survive a cold winter because the layer of ice that forms at the top of a lake insulates the water below and prevents the lake from freezing solid. What unique property of water contributes to this effect?

• A. Water absorbs heat when it evaporates and forms a gas.

• B. Water expands and becomes less dense when it freezes.

• C. Water molecules completely separate into ions in solution.

• D. Water forms hydrogen bonds with ions and other polar substances.

Tags

NGSS.HS-ESS2-5