Chemistry experts- chime in.

[Gunbuffer]

You’d do well to study the periodic table and its inherent trends like electronegativity and atomic radius aka periodicity Also the inherent crystalline structures affect Density. Those dips and peaks on that graph above
Correspond to the different periods or “rows”

 

[Gunbuffer]

You’d do well to study the periodic table and its inherent trends like electronegativity and atomic radius aka periodicity Also the inherent crystalline structures affect Density. Those dips and peaks on that graph above
Correspond to the different periods or “rows”

Also be happy
To lend you a text

 

[TerryMiller]

Also be happy
To lend you a text

How does one "lend" a text? Once it is sent, isn't the recipient then the owner?

 

[Gunbuffer]

How does one "lend" a text? Once it is sent, isn't the recipient then the owner?

BOOK

 

[Fr Mulcahy]

I got this little metal element cube set for my son.

It is pretty cool, but I think it has a problem.

Each cube is a 1 cm square.



W- Tungsten 18 grams



Bismuth 12 grams




They are supposed to be at least .999 pure.




Am I crazy?

You're not crazy. Tungsten and Bismuth have different crystal structures. Tungsten's structure is more compact than Bismuth's.

 

[jmike314]

Not crazy.
Those masses are off.
If each cube is 1cm x 1cm x 1cm then VOLUME = 1cc.
The densities are given on the back of each cube.
Therefore the mass of the pure substance can be calculated using D=m/V
Bismuth 9.75g/cc = m/1cc..........9.75g=m
Tungsten 19.35g/cc = m/1cc..........19.35g=m
What about the other cubes? Do their masses come out correctly?

 

[Fr Mulcahy]

You're not crazy. Tungsten and Bismuth have different crystal structures. Tungsten's structure is more compact than Bismuth's.

View attachment 440536

But as someone pointed out, the densities are off. Can you tell us where you got the set? And did you tare the scale?

 

[panayoti]

Grams are a mass measurement.
Lbs is weight.
Weight is a force.
If you use mass you need to take into account the force of gravity. 9.8 m/sec2
Weight will change depending on gravity as gravity varies as a function of the distance to the center of the earth.
Am element will have the same mass no matter where it is. On the moon etc.

 

[sherrick13]

The set is right. I was just thinking about it wrong.