Properties of metals
Iron, one of the two insoluble solids, rusted a bit overnight, which is one of its properties.
We then concluded our fraction III to be water.
The insoluble solids were a bit easier to identify because there were a lot of tests done
What does it look like?
Hexagonal crystal structure
Why is it so cool?
Heaviest known element
Found in small amounts in nickel and platinum ores
H) Named for Greek word meaning odor (osme)
1. The molality of a solution is a solution measured by the amount of moles of solute
dissolved in one kilogram of solvent. A one molal solution contains one mole of solute in
one kg of solvent.
2. The major source of error for the potassium nitr
After we successfully identified the insoluble solids and the soluble solids, we
fractionally distilled the remaining liquid to separate its content.
After this procedure we were left with 3 fractions, fraction I, fraction II, and fractio
Purpose: The purposes of the flame test are to obtain the colors emitted by metal nitrates through
the use of Bunsen burners and to identify an unknown nitrate.
2. Bunsen burner
4. Metal nitrates (8 known; 1 unkn
1. When the evaporating dish was burning in the yellow flame, on the other hand,
the flame only turned an orange color, significant of impurities.
2. In the copper wire experiment, there was no residue left on the wire after
holding it in the bl
The source used in Tables one through three supports this fact for sand. And, in
the IPS book on pages 11 to 12, sand cannot be soluble in water since
displacement of water was used to find volume of dry sand.
Furthermore, we recognized sand from
Density Calculation Lab
Since our lab equipments are not pin point accurate we can say 0.81g/cm is close
enough to the actual density.
However, another substance called T-butanol also has a density of 0.79g/cm and a
boiling point of 82C.
This was a proble
Bunsen burner experiment
1. Make sure long hair is tied back and dangling clothes or jewelry are secure and out
of the way.
2. Wear goggles and aprons.
3. Keep the Bunsen burner away from the edge of the lab station.
4. Stay a safe distance away f
Boiling Point to Use Molecular Mass
Potassium nitrate solution
Temperature of boiling
Boiling point of solution
1. Calculated molecular mass:
a) KNO3 solution:
tb = Kb m
What is science?
There are many different definitions, but I think of science as the result of someone
asking one of the two following questions:
Why? and How?
A long time ago, people wondered, Why do we have night and day?.
This question resulted in the
Density expected to be light because of the fine grains
Sight looked like sand because resembled the same substance used in Lab 3.8 when
working with sand
The solid was found to be insoluble in alcohol and water
The density upon m
If I become a researcher, I will definitely spend time studying the different animals to
satisfy my scientific curiosity about the subject.
I will look for answers to this phenomenon, and other phenomena I find interesting.
Properties of silver
Then silver, originally a light brown, caused a delayed reaction, giving the flame a few
flickers of orange. Sodium and zinc, both a pale yellow, were tested after silver.
Though both turned the flame orange, the former caused an imme
Check the magnetism of both solids
Distill the mixture of liquids until a solid (dissolved) is left and the rest of the liquid
has been collected in the collecting tube, recording temperatures
Fractionally distill the liquids, recording the temp
Description: Strong, distinct smell, like alcohol. Clear, but a shade of pale yellow over
the next few days at times.
Density we guessed it was alcohol from the smell, so expected the density to be that
Evidence for Chemical Change
After copper (II) nitrate and sodium hydroxide were stirred together:
Light blue solution
Gas / bubbles
Gritty texture of precipitate
No heat released
After previous product was heated:
Separation gritty, dark
Neither of the solids conducted an electric current in the solid state because:
Sodium chloride is an ionic compound, but in the solid state, its ions cannot
move ions need to be able to move freely in order to carry an electric cu
Copper Wire Experiment
The liquid becomes colorless it is not blue-green anymore
After the wire is removed and compared with a sample of copper wire:
The copper formed is thicker than the copper wire and is different in shape
The color if th
Aluminum chloride is in the solution that is left over after copper was removed from
the test tube.
The aluminum chloride could have been recovered by evaporating the water in the
The color of the solutions is a blue-green.
The substances that d