Crash Course: Properties of Water Quiz

Answer the following questions with the information from the video.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS3-2

Water is comprised of ____​ (a)   ____ hydrogens and __​ (b)   ______ oxygen. The hydrogens each share an ____​ (c)   ____ ________ with oxygen in what we call a ___​ (d)   _____ bond.​

• 2
• 1
• electron
• covalent

Tags

NGSS.MS-PS1-1

Because the oxygen atom is a little bit more greedy for electrons, it has a slight __​ (a)   ______ charge whereas the hydrogen atoms have a slight __​ (b)   ______ charge. Thanks to this ____​ (c)   ____ ________, all water molecules are ___​ (d)   _____ to one another.

• negative
• positive
• polarity
• attracted

Tags

NGSS.MS-ESS2-4

Water has the highest ___​ (a)   ​ _____ of any non-metallic liquid.​ ​

• cohesion
• Manesion
• Papahesion
• biogeohesion

Why does water spread out instead of bead up on glass? Explain.

Answer explanation

because of adhesion; the adhesive forces between the water and the glass are stronger than the cohesive forces of the individual water molecules in the bead of water

Tags

NGSS.HS-ESS2-5

The fact that water is a polar molecule also makes it good at ____​ (a)   ____ things, which makes it a good __​ (b)   ______.

• dissolving
• solvent

Substances that dissolve in water are called _​ (a)   _​ ______, and they are because they are polar, and their polarity is stronger than the cohesive forces of the water.​

• hydrophilic
• hydrophobic
• nonpolar

What is a hydrophobic substance? Explain.

Answer explanation

something that is fearful of water; these molecules lack charged poles, they are non-polar and are not dissolving in water because essentially they’re being pushed out of the water by water’s cohesive forces

Tags

NGSS.MS-PS1-2

Why is it that solid water is less dense than liquid water while everything else is the exact opposite of that?

Answer explanation

at 0 degrees Celsius, water molecules start to solidify and the hydrogen bonds in those water

molecules form crystalline structures that space molecules apart more evenly, in turn making

frozen water less dense than its liquid form

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Water has a very high ________.​ ​ (a)  

• heat capacity
• profile
• pain tolerance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4