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Properties of Water FA

SWBAT describe examples of how water supports life using the properties of water.

1 Water is a polar molecule becauseA. It shares electrons equally

between oxygen and hydrogen

B. One side of the molecule has a slight positive charge and the other side has a slight negative charge

C. It freezes at zero degrees Celsius

D. It forms ionic bonds with other water molecules

It shares e

lectrons e

quall...

One side of t

he molecu

le...

It freeze

s at z

ero degre

es ...

It form

s ionic b

onds with

...

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middleschoolchemistry.com

Darker grey shading shows higher electron density

around nuceli

2 Which side of the water molecule has a slight negative charge?

A. Oxygen sideB. Hydrogen side

50%50%

Darker grey shading shows higher electron density around

nuceli

3 What type of bond existswhere the red arrows arepointing?

A. IonicB. CovalentC. MetallicD. Hydrogen

Ionic

Covalent

Metallic

Hydroge

n

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4 Water molecules form what type of bonds with each other?

A. Covalent bondsB. Metallic bondsC. Ionic bondsD. Hydrogen bonds

Covalent b

onds

Metallic bonds

Ionic bonds

Hydroge

n bonds

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These weak bonds

saburchill.com

5 Water droplets form by water molecules being attracted to each other. What term best explains this behaviour?

A. AdhesionB. CohesionC. SolubilityD. Magnetism

Adhesion

Cohesion

Solubility

Magnetism

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encyclopedia.lubopitko-bg.com

6 Which property of water allows water to stick to the sides of the straw?A. CohesionB. AdhesionC. Heat capacityD. Universal

Solvent

Cohesion

Adhesion

Heat capacit

y

Universal S

olvent

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Straw molecules

scienceprojectideasforkids.com

7 Which property of water allows bugs to walk on water?

A. AdhesionB. CohesionC. Surface tensionD. Heat capacity

Adhesion

Cohesio

n

Surfa

ce te

nsion

Heat capacit

y

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quest.nasa.govdefneapul-

cive1170.wikispaces.com

8 Water takes _______ heat to change to its gaseous state.

A. Large amounts of

B. Small amounts of

C. No33% 33%33%

Boiling temperatures

buildingscience.com Middleschoolscience.com

9 Surface tension and capillary action occur in water because itA. is very denseB. is nonpolarC. has ionic bondsD. has hydrogen

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davidlnelson.md msnucleus.org

10 What property of water allows sweat to cool the body & coastal cities to have more stable temperatures than inland cities?

A. High heat capacity of 1.0 calories/gº C

B. Neutral pH of 7C. Surface tension and

capillary actionD. Living Solvent of

polar covalent & ionic compounds

Heat capacit

y

Neutral p

H

Cohesion

Universal S

olvent

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Very helpful animation to explain: http://www.hk-phy.org/contextual/heat/tep/temch/island_e.htm http://www.abpischools.org.uk/page/modules/skin/skin3.cfm

11 What kinds of substance can dissolve in water?

A. Hydrophobic substancesB. Hydrophilic substancesC. Hydrocarbons&

nonpolar colvalent compounds like lipids

D. Ions and polar covalent molecules like sugars

E. Substances with charges

F. A, C, & E G. B, D, & E

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http://chsweb.lr.k12.nj.us/mstanley/outlines/waterap/water.html newdirections.com.au

10 What property of water allows sweat to cool the body & coastal cities to have more stable temperatures than inland cities?

A. High heat capacity of 1.0 calories/gº C

B. Neutral pH of 7C. Surface tension and

capillary actionD. Living Solvent of

polar covalent & ionic compounds

Heat capacit

y

Neutral p

H

Cohesion

Universal S

olvent

25% 25%25%25%

Very helpful animation to explain: http://www.hk-phy.org/contextual/heat/tep/temch/island_e.htm http://www.abpischools.org.uk/page/modules/skin/skin3.cfm