Bonding CER for CCSS

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FINAL DRAFT BONDING

Name: _________________________________________

BONDING

Task #1

Date: ________

Using your knowledge of chemistry and the information bellow determine if the unknown compound is covalent or ionic.

COMPOUND

Calcium

Chloride

Sucrose

FORMUL

A

CaCl

2

MELTING

POINT

782 o C

C

12

H

22

O

11

186 o C

BOILING

POINT

1936 o C

N/A it starts to burn

PHYSICAL

APPEARANCE

White big crystals not easy to crush

SOLUBILITY

Soluble in water

Insoluble in alcohol

White small crystals. Can be easily crush

Soluble in water

Slightly soluble in alcohol

CONDUCTIVI

TY

Conduct electricity when dissolved

TYPE

ionic

Does not conduct electricity covalent

Acetaminophe n

Unknown

C

8

H

9

NO

2

???

170 o C

800 o

C

N/A it decompos es

White powder

1465 o

C White small crystals easy to crush

Slightly soluble in water

Slightly soluble in alcohol

Soluble in water

Does not conduct electricity

Conduct electricity when dissolved covalent

????

Insoluble in alcohol

.

Make sure to write your answer using complete sentences. Make sure your answer has

A claim whether it is ionic or covalent

Cite at least 2 evidences from the table and your knowledge of chemistry to back up your claim

The reasoning or conclusion behind your claim.

Task #2

Megan and Nathaniel claim that Potassium chloride is a polar compound but they cite no evidence to back it their claim.

They also contend that pure water is a non-polar compound because it does not conduct electricity.

Prove or disprove their claim by citing physical, chemical or electro-negativity difference evidences. Make sure to write your answer using full sentence structure.

Task #3

What type of compound you get when you burn solid magnesium in the present of oxygen?

1) Write a balance chemical equation to represent chemical the reaction.

2) Make a claim that includes whether the compound formed in the product is polar, ionic or non-polar and why.

The periodic table is a great toll to chemists. It not only contains the elements but provides you information as to their properties. Recently you learned how to use the period table to predict the type of compounds or the type of bonds that you can form.

For example

Ionic Compound: Na + Cl

NaCl

Covalent Compound: S + O2

SO2

Non-polar Cl + Cl

Cl2

Metalic: Fe + Fe

2Fe or

Zn + Fe

a galvanized iron that would not rust

Base on the information above provided, the reference table and your knowledge of Chemical bonding can you provide a easy way to remember how to identify the type of bond when we look at the elements forming the compound.

Metalic:

Ionic:

Covalent Polar

Covalent Nonpolar:

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