Lab 6-Atoms and Elements-Lab Report PDF

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REPORT SHEET

Atoms and Elements

LAB

6

A. Physical Properties of Elements Element

1. Symbol 1. Atomic Number

2. Color

2. Luster 3. Metal/Metalloid/ Nonmetal

Aluminum

*Al

*13

Lt. gray

Shiny

*metal

Carbon

*C

*6

Black

Dull

*nonmetal

Copper

*Cu

*29

Orange

Shiny

*metal

Iron

*Fe

*26

Gray/black

Shiny

*metal

Magnesium

*Mg

*12

Lt. gray

Shiny

*metal

Nickel

*Ni

*28

Lt. gray

Shiny

*metal

Nitrogen

*N

*7

Colorless

None

*nonmetal

Oxygen

*O

*8

Colorless

None

*nonmetal

Phosphorus

*P

*15

Deep red

Dull

*nonmetal

Silicon

*Si

*14

Gray/black

Shiny

*metalloid

Silver

*Ag

*47

Lt. gray

Shiny

*metal

Sulfur

*S

*16

Yellow

Dull

*nonmetal

Tin

*Sn

*50

Lt. gray

Shiny

*metal

Zinc

*Zn

*30

Gray

Shiny

*metal

2

3

Noble gases

Halogens

1

Alkaline earth

Alkali

B. The Periodic Table

12

Transition elements

4

26

28

29

Fe

Ni

Cu

5

6

7

8

C

N

O

13

14

15

16

Al

Si

P

S

47

50

Ag

Sn

Questions and Problems Q1 From their positions on the periodic table, categorize each of the following elements as a metal (M), a metalloid (ML), or a nonmetal (NM): Na Fe

*M *M

S C

*NM *NM

Cu As

*M *ML

F Ca

*NM *M

Q2 Give the symbol of each of the following elements: a. noble gas in Period 2 c. alkali metal in Period 3 e. alkali metal in Period 4

*C *Na *K

b. halogen in Period 2 d. halogen in Period 3 f. metalloid in Period 2

*F *Cl *B

3

Complete the following table for the elements that are listed. If you have a full display of elements, check to see if your predictions are correct.

Element

Metal/Metalloid/ Nonmetal

Prediction: Shiny/Dull

Correct? Yes/No

Chromium

M

Shiny

Yes

Gold

M

Shiny

Yes

Lead

M

Shiny

Yes

Cadmium

M

Shiny

Yes

ML

Shiny

Yes

Silicon C. The Atom

Name of Element Iron

Symbol of Element *Fe

Atomic Number *26

Mass Number *56

Protons

Neutrons

Electrons

*26

30

*26

Aluminum

*Al

*13

*27

*13

14

*13

Potassium

*K

*19

*39

*19

20

*19

Bromine

*Br

*35

*80

*35

45

*35

Gold

*Au

*79

*197

*79

118

*79

D. Isotopes and Atomic Mass

1.

Nuclear Symbol 107 47Ag

Protons *47

Neutrons *60

Electrons *47

*47

*62

*47

109 47Ag

2.

Nuclear Symbol

Isotopic Mass

Percent Abundance

107 47Ag

106.9

51.84%

109 47Ag

108.9

48.15%

(Show calculations here)

Questions and Problems Q4 A neutral atom has a mass number of 80 and has 45 neutrons. Write its atomic symbol. *80 35 Br Protons=35 Neutrons=45 Electrons=35 80-45=35 electrons Atomic number=35 Mass number=80

Q5 An atom has two more protons and two more electrons than the atom in Question 4. What is its atomic symbol? *82 37 Rb Protons=35+2=37 Electrons=35+2=37 82-47=37 electrons Atomic number=35+2=37 Mass number=80+2=82...