Properties of Water and Solutions

Water is a universal solvent because it...

• It can be found anywhere

• It freezes when it gets cold

• floats when frozen

• Dissolves most substances

Attractions between water molecules are called

• Covalent bonds

• Ionic bonds

• Polar bonds

• Hydrogen bonds

What is the reason why oil and water don't mix?

• Oil is too heavy to mix with water

• Water can only mix with polar molecules 

• Water can only mix with non-polar molecules

• Oil is too light to mix with water 

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

​ (a)   The boiling point of a solution is affected by concentration.

• True

• False

The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form

• less polar

• more polar

• less dense

• more dense

Tags

NGSS.MS-PS1-2

The ___ is the thing being dissolved.

• solute

• solvent

• mixture

• suspension

Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?

• Water expands as it freezes.

• Water is an excellent solvent.

• Water exhibits cohesive behavior.

• Water is able to moderate temperature.

Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent? 

• purity

• polarity and cohesion

• high heat capacity

• expansion upon freezing

Water makes up approximately 60% of the human body and plays a vital role in regulating body temperature. Which property of water makes it good at regulating temperature?

• Water is a good solvent.

• Water exhibits strong cohesion.

• . Water has an unusual crystalline structure.

• Water has a high capacity for heat.