Properties of Water

Large bodies of water do not change temperature easily. Why? (Hint: Why is a swimming pool feel warmer at night?)

• Water is a solvent.
• Water has a high heat capacity.

What property of water helps to moderate earth's temperature?

• adhesion
• cohesion
• high specific heat capacity

What properties of water allows water to travel up the stems of plants in a process called capillary action?

• Adhesion and Cohesion
• Cohesion and Solubility

Tags

NGSS.MS-ESS2-4

A molecule with electrically charged areas is called a _______________.

• magnet
• polar molecule
• electrical molecule

Why does ice stay at the top of oceans instead of sinking to the bottom?

•  Ice is colder than liquid water.
• Ice is less dense than liquid water.
• Ice is more dense than liquid water.

As you added drops to the coins, each drop stuck to the other water because of ________________.

• adhesion
• cohesion
• specific heat

A water molecule is a ________ molecule, which has one oxygen that has a __________ charge and two hydrogens that have a ___________ charge.

• nonpolar, positive, negative
• polar, positive, negative
• polar, negative, positive
• nonpolar, negative, 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

Water is polar because...

• The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
• The molecule has two poles, at which the it is colder than other regions of the molecule.
• The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.
• The water molecule is neutral.

What is diffusion?

• when molecules move from a low concentration to a high concentration 
• when molecules move from a high concentration to a low concentration.
• no movement 
• molecules move everywhere