Properties of Water

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Attraction between the negative oxygen atom of one water molecule and the positive hydrogen atom of another water molecule are called _________.

• covalent bonds

• ionic bonds

• polar bonds

• hydrogen bonds

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Tags

NGSS.MS-PS1-4

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive

Tags

NGSS.HS-PS1-3

Water is a universal solvent because ____.

• it can be found anywhere

• it freezes when it gets cold

• it floats when frozen

• it dissolves most substances

Tags

NGSS.HS-ESS2-5

Which of the following is LEAST likely to dissolve in water?

• nonpolar fats and oils
• polar sugar molecules
• salt made of a positive sodium ion and a negative chloride ion
• all of the substances will dissolve easily in water

Tags

NGSS.HS-PS1-3

Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?

• Water is an acid.
• Water is a versatile solvent.
• Water has a high heat capacity.
•  Water acts as a buffer.

Tags

NGSS.HS-ESS2-5

Why does water move from the roots to the leaves of plants?

• Solutes push the water up the plant.

• Capillary action pulls the water molecules like a chain against gravity.

• Water is pulled by gravity through the plant body.

• The high specific heat of water allows water to move freely through the plant.

Tags

NGSS.MS-LS2-3

Why does ice float on liquid water?

• Ice does not float on liquid water.

• It has a higher density than liquid water.

• It floats because it has lower density than liquid water.

• adhesion and cohesion

Why does water have a high specific heat index?

• It requires a great amount of energy for water to become hot. 
• It takes water little energy to get hot.
• Water changes temperature very easily. 
• Water warms up fast when heated by the sun. 

Tags

NGSS.MS-PS1-4