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Pre-Chemistry Internet Worksheet--Periodic Table  http://www.webelements.com/webelements/scholar/index.html

 

Follow the directions and fill in the following table.

 

Element Name, Symbol, Number and Weight

Group Number and period (see table)

Group Name

Biological Role of element

(click on biology on side panel)

Melting/ Boiling point (degrees F) (click on Physical Data)

Non-radioactive Isotopes/

Name and Mass (click on Nuclear Data, and round to the nearest hundredths)

Natural abundance

Sodium

Na

11

23 (round to the nearest ones)

1

 

3

Alkali metal

It is a vital element.

The human diet must contain a sensible amount of sodium. 

207.9 F

melting

1621 F

boiling

Na(23)

22.99

100

Carbon

C

6

12

14

 

2

None

Carbon is present in all organic compounds.

6381 F

melting

7281 F

boiling

C(12)

12.00

C(13)

13.00

98.93

 

1.07

Helium

He

2

4

18

 

1

Noble gas

No biological role

-458 F

melting

-452.07

boiling

He(3)

3.02

He(4)

4.00

Less than 1

100

Zinc

Zn

30

65.41

12

 

4

None

It is essential in the diets of plants and animals.

787.15 F

melting

1665 F

boiling

Zn(64) 63.93

Zn(66) 65.93

Zn(67) 66.93

Zn(68) 67.92

Zn(70) 69.93

48.63

27.90

4.10

18.75

.62

Iodine

I

53

126.90

17

 

5

Halogen

It is an essential component of the human diet. (Lack of it causes goiter).  It is also useful in medicine.

236.7 F

melting

363.7 F

boiling

I(127)

126.90

100

Silver

Ag

47

108

11

 

5

Coinage Metal

No biological role

1763.2 F

melting

3924 F

boiling

Ag(107)

106.91

Ag(109)

108.90

51.84

 

48.16

 

 

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