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Old 07-10-2013, 07:27 PM   #12091
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Originally Posted by HomeInMyShoes View Post
Highest melting point: Tantalum?
Lowest melting point: Hydrogen?
Highest boiling point: Tantalum?
Lowest boiling point: Hydrogen?
Sorry none of these are correct.

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Originally Posted by HomeInMyShoes View Post
Ones that are liquid would include Mercury and Bromine.

I though Technetium had no stable isotopes found naturally occuring. I could be wrong on that though.
I forgot about Bromine . Mercury and Bromine are two of the four five liquid elements.

Technetium is correct.

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Highest boiling point = tungsten?
Correct (also sometimes called Wolfram).
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Old 07-10-2013, 08:35 PM   #12092
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Lowest boiling point = helium?
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Old 07-10-2013, 09:31 PM   #12093
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What is white and sour...
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Old 07-10-2013, 10:23 PM   #12094
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Other liquid elements are Francium and Cesium.
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Old 07-10-2013, 10:28 PM   #12095
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Highest melting point- is it Carbon?
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Old 07-11-2013, 01:21 AM   #12096
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Highest melting pt- that stuff in light bulbs, tungsten
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Old 07-11-2013, 07:34 AM   #12097
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Quote:
Originally Posted by poohbear_nc View Post
Lowest boiling point = helium?
Correct

Quote:
Originally Posted by Fbone View Post
Other liquid elements are Francium and Cesium.
Cesium is correct

Quote:
Originally Posted by Fbone View Post
Highest melting point- is it Carbon?
Correct

Quote:
Originally Posted by Fat Abe View Post
Highest melting pt- that stuff in light bulbs, tungsten
Correct, but Poohbear_nc was first.

Element with highest melting point: Carbon [C] Fbone
Element with lowest melting point: Helium [He] HomeInMyShoes
Element with highest boiling point: Tungsten [W] Poohbear_nc
Element with lowest boiling point : Helium [He] Poohbear_nc

Elements that are liquid in normal temperature range: Mercury [Hg] HomeInMyShoes, Bromine [Br] HomeInMyShoes, Cesium [Cs] Fbone, ?, ?.

What element of atomic number less than Uranium has no stable isotope and has never been found to occur naturally on Earth.: Technetium [Te] HomeInMyShoes

Last edited by Hamlet53; 07-11-2013 at 10:49 PM.
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Old 07-11-2013, 10:15 AM   #12098
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I'll hazard a guess that the lowest melting point is also Helium. Weird, I remember from high school chemistry that Cesium looked like rather powdery at room temperature and that it reacted violently with water.

Last edited by HomeInMyShoes; 07-11-2013 at 10:18 AM.
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Old 07-11-2013, 10:20 AM   #12099
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It also looks like my love of experimental surf music has finally paid off:

Made from Technetium
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Old 07-11-2013, 10:48 PM   #12100
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Quote:
Originally Posted by HomeInMyShoes View Post
I'll hazard a guess that the lowest melting point is also Helium. Weird, I remember from high school chemistry that Cesium looked like rather powdery at room temperature and that it reacted violently with water.

Helium is correct. The melting point is less than one degree Cover absolute zero. Yes Cs being an alkali metal reacts violently with water. It melts at a temperature of 38.4 C (83.2 F); really just a warm day.


On additional investigation it would appear that Fbone's suggestion of Francium as a liquid element may be valid, it being a rare element with only radioactive isotopes there is not a precise value for the melting point. I was not considering any of the unstable elements so it was not on my list.

Interesting piece of trivia. There are two elements that are named after the country of France, Francium and one the elements that are liquid at normal temperatures that has not been named yet. Not sure what if any significance there is to that.
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Old 07-12-2013, 08:04 AM   #12101
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Well this has stalled I guess. The two liquid elements not mentioned are Gallium [Ga] and Rubidium [Rb]. HomeInMyShoes or Fbone are up.
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Old 07-14-2013, 06:41 PM   #12102
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Here's one to restart:

If a small light oxygen tank were tied to a bird so that it can breathe on the moon, would the bird fly faster, slower or the same speed as it does on earth? (Remember that there is less gravity on the moon)
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Old 07-14-2013, 09:51 PM   #12103
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The bird wouldn't fly at all. The wings need air to work against. Superman flies on the moon, but no one knows how. What kind of propulsion system is he using? Those Kryptonian muscles must be pretty strong, and his air reserve immense, is all I have to say.

Last edited by WT Sharpe; 07-14-2013 at 09:55 PM.
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Old 07-15-2013, 12:17 AM   #12104
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Is that a sandwich?
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The bird wouldn't fly at all. The wings need air to work against. Superman flies on the moon, but no one knows how. What kind of propulsion system is he using? Those Kryptonian muscles must be pretty strong, and his air reserve immense, is all I have to say.
Correct. A bird cannot fly on the moon because there is no air to suspend it.
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Old 07-24-2013, 06:48 PM   #12105
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Here's a brain teaser I guessed incorrectly. Can you get it right?

Where does Earth belong in the following astronomical series?

Uranus, Jupiter, Neptune, Mars, Saturn, Venus, Mercury
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