AGE

LUSTER

CONDUCTIVITY

MALLEABILITY

1

2

3

4

CO

H2O

CO2

H2

Fluorine and chlorine

Boron and aluminum

Hydrogen and cesium

Cobalt and nickel

S, Fe, O2, Sr, and Al

S, O2, and LiF

N2O4, O2, and LiF

N2O4, Fe, Sr, and Al

balance and grad. cylinder

metric ruler and beaker

thermometer and erlenmeyer flask

specimen bottle and tweezers

electrons are inside nucleus with no charge

electrons are outside the nucleus with no charge

electrons are inside the nucleus with negative charge

electrons are outside nucleus with negative charge

student 1

student 2

student 3

student 4

Silicon

Chlorine

Selenium

Phosphorus

A

B

C

D

SAMPLE 1

SAMPLE 2

SAMPLE 3

SAMPLE 4

A

B

C

D

2

3

1

0

6

12

24

36

49.97

55.23

21.97

28.00

atoms of ammonia

molecules of ammonia

atoms of hydrogen in each molecule

atoms of nitrogen in each molecule

6 BLUE, 3 YELLOW, 7 GREEN

2 BLUE, 1 YELLOW, 4 GREEN

2 BLUE, 3 YELLOW, 12 GREEN

6 BLUE, 12 YELLOW, 12 GREEN

A

B

C

D

Observation I

Observation II

Observation III

Observation IV

Steam forms above boiling water

a solid forms when clear solution is frozen

a solid forms when 3 clear solutions are mixed

sugar crystals form on the sides of a boiling pot of sugar water