Properties of Water Review

Polarity

100

Hydrogens have a _______ charge.

Oxygens have a __________ charge.

Positive

Negative

200

What is the molecular formula for water?

H₂O

300

Define Polarity.

The positive charge from the Hydrogen is attracted to the negative Oxygen molecule. The opposite charges attract to make the water molecule.

400

What type of bond holds together the HYDROGEN and OXYGEN in a water molecule?

Covalent Bond

500

Why is it important that water is Polar?

It allows the liquid to dissolve essential nutrients, stick to itself, and form the protective barriers needed for living cells.

Hydrogen Bonding

100

What is a Hydrogen Bonds?

The bond that holds together two water molecules.

200

Are Hydrogen Bonds strong or weak?

Weak

300

When a hydrogen bond forms, why does it go from hydrogen to oxygen?

Water is polar, so opposite charges attract.

400

If i were to draw a Water molecule binding to another would the bond go from:

Hydrogen to Hydrogen

Hydrogen to Oxygen 

Oxygen to Oxygen

Hydrogen to Oxygen

500

Hydrogen bonds puling water molecules together at the surface is...

(Hint: This allows the bugs to sit on top of the water.)

Surface Tension

Cohesion & Adhesion

100

Water molecule sticking to another water molecule is...

Cohesion

200

A water molecule sticking to a non-water molecule is...

Adhesion

300

A plant needs water, the water molecule sticks to the inside of the root to travel up the plant. Is this Cohesion or Adhesion?

Adhesion

400

What bond holds together the two water molecules in Cohesion?

Hydrogen Bond

500

Draw a picture that demonstrates Cohesion and Adhesion.

Hold up your board

Universal Solvent

100

Define Universal Solvent.

Waters ability to dissolve different substances.

200

What are two solutes that dissolve in water?

Sugar and salt

300

What happens when you mix water and oil? Does it dissolve? Why or why not?

It does not dissolve because the water is nonpolar and will not break down in the water.

400

Draw an image of how water dissolves a salt molecule 

Hold up your boards

500

An oxygen gas molecule is non-polar and does not dissolve in water. How does this effect fish?

The water molecule surround the oxygen gas molecule and create dissolved oxygen

All about Ms. Burns (woot woot)

100

What is Ms.Burns' first name?

Emma

200

What college did Ms. Burns go to?

Rollins College in Orlando

300

How old is Ms. Burns?

22

400

What High School did I go to?

Auburndale

500

What is Ms. Burns' birthday?

May 17th