chemical elements

logistic_guy

logistic_guy

Senior Member
Joined
Apr 17, 2024
Messages
1,065
From the following list of elements—\(\displaystyle \text{Ar}, \text{H}, \text{Ga}, \text{Al}, \text{Ca}, \text{Br}, \text{Ge}, \text{K}, \text{O}\)—pick the one that best fits each description. Use each element only once: \(\displaystyle \bold{(a)}\) an alkali metal, \(\displaystyle \bold{(b)}\) an alkaline earth metal, \(\displaystyle \bold{(c)}\) a noble gas, \(\displaystyle \bold{(d)}\) a halogen, \(\displaystyle \bold{(e)}\) a metalloid, \(\displaystyle \bold{(f)}\) a nonmetal listed in group \(\displaystyle \text{1A}\), \(\displaystyle \bold{(g)}\) a metal that forms a \(\displaystyle 3\text{+}\) ion, \(\displaystyle \bold{(h)}\) a nonmetal that forms a \(\displaystyle 2\text{-}\) ion, \(\displaystyle \bold{(i)}\) an element that resembles aluminum.
 
logistic_guy said:
From the following list of elements—\(\displaystyle \text{Ar}, \text{H}, \text{Ga}, \text{Al}, \text{Ca}, \text{Br}, \text{Ge}, \text{K}, \text{O}\)—pick the one that best fits each description. Use each element only once: \(\displaystyle \bold{(a)}\) an alkali metal, \(\displaystyle \bold{(b)}\) an alkaline earth metal, \(\displaystyle \bold{(c)}\) a noble gas, \(\displaystyle \bold{(d)}\) a halogen, \(\displaystyle \bold{(e)}\) a metalloid, \(\displaystyle \bold{(f)}\) a nonmetal listed in group \(\displaystyle \text{1A}\), \(\displaystyle \bold{(g)}\) a metal that forms a \(\displaystyle 3\text{+}\) ion, \(\displaystyle \bold{(h)}\) a nonmetal that forms a \(\displaystyle 2\text{-}\) ion, \(\displaystyle \bold{(i)}\) an element that resembles aluminum.
Click to expand...
show us your effort/s to solve this problem.
 
\(\displaystyle \bold{(a)}\) an alkali metal \(\displaystyle \rightarrow \ \text{K} \rightarrow \ \text{Potassium}\)
 
logistic_guy said:
From the following list of elements—\(\displaystyle \text{Ar}, \text{H}, \text{Ga}, \text{Al}, \text{Ca}, \text{Br}, \text{Ge}, \text{K}, \text{O}\)—pick the one that best fits each description. Use each element only once: \(\displaystyle \bold{(a)}\) an alkali metal, \(\displaystyle \bold{(b)}\) an alkaline earth metal, \(\displaystyle \bold{(c)}\) a noble gas, \(\displaystyle \bold{(d)}\) a halogen, \(\displaystyle \bold{(e)}\) a metalloid, \(\displaystyle \bold{(f)}\) a nonmetal listed in group \(\displaystyle \text{1A}\), \(\displaystyle \bold{(g)}\) a metal that forms a \(\displaystyle 3\text{+}\) ion, \(\displaystyle \bold{(h)}\) a nonmetal that forms a \(\displaystyle 2\text{-}\) ion, \(\displaystyle \bold{(i)}\) an element that resembles aluminum.
Click to expand...
The definition of a metalloid:

Metalloids can be defined as chemical elements whose physical and chemical properties fall in between the metal and the non metal categories

Continue....
 
First makes post with no work shown and then posts the solution. This is in violation of the posting guide lines.
Reported this OP to the admin---again
 
khansaheb said:
The definition of a metalloid:

Metalloids can be defined as chemical elements whose physical and chemical properties fall in between the metal and the non metal categories

Continue....
Click to expand...
Very nice😍

Did you know this recently or it is an accumulating knowledge?

khansaheb said:
What a valiant effort...
Click to expand...
Thanks professor Khan. I had to read two consecutive chapters to get that little information about Potassium. I am working on the alkaline earth metal now!

Eventually, we will crack all of these chemical elements.

💪😾
 
khansaheb said:
What does being better mean?
Click to expand...
The meaning speaks for itself.

khansaheb said:
Why beams - it is a topic of Civil Engineering?
Click to expand...
While beams are more related to civil engineering, let us take for example, metallic beams: In civil engineering, beams are often made from metals like steel or aluminum because of their high strength-to-weight ratio. Metallurgical sciences are involved in determining the ideal composition and processing techniques for these materials to ensure the beams perform as needed. For example, metallurgical processes like heat treatment can improve the strength of steel beams.

Also in Metallurgical Sciences, understanding the stress and strain behavior of materials is crucial. And it was the focus of all my beams problems so far.
 
khansaheb said:
It does ??? You must have a very good hearing - such that you can hear whisper from beams.....

Again - what does understanding mean in this context......
Click to expand...
I will explain it to you as a puzzle. There are \(\displaystyle 10\) people in a list.

\(\displaystyle \bold{01.}\) An English Teacher.
\(\displaystyle \bold{02.}\) A French Teacher.
\(\displaystyle \bold{03.}\) A Metallurgical Engineer.
\(\displaystyle \bold{04.}\) A Lumberjack.
\(\displaystyle \bold{05.}\) A Computer Engineer.
\(\displaystyle \bold{06.}\) A Mechanical Engineer.
\(\displaystyle \bold{07.}\) A Chess Grandmaster.
\(\displaystyle \bold{08.}\) A Civil Engineer.
\(\displaystyle \bold{09.}\) A Doctor.
\(\displaystyle \bold{10.}\) A Chef.

Only three of these are capable of solving beams problems. Can you find them? That would be the answer to your questions!
 
logistic_guy said:
I will explain it to you as a puzzle. There are \(\displaystyle 10\) people in a list.

\(\displaystyle \bold{01.}\) An English Teacher.
\(\displaystyle \bold{02.}\) A French Teacher.
\(\displaystyle \bold{03.}\) A Metallurgical Engineer.
\(\displaystyle \bold{04.}\) A Lumberjack.
\(\displaystyle \bold{05.}\) A Computer Engineer.
\(\displaystyle \bold{06.}\) A Mechanical Engineer.
\(\displaystyle \bold{07.}\) A Chess Grandmaster.
\(\displaystyle \bold{08.}\) A Civil Engineer.
\(\displaystyle \bold{09.}\) A Doctor.
\(\displaystyle \bold{10.}\) A Chef.

Only three of these are capable of solving beams problems. Can you find them? That would be the answer to your questions!
Click to expand...
Every engineer worth their salt will be able to solve a beam problem (If they forgot, they would dust-off their old text books and solve the beam problem - even if it is EMBARASSING) - elastic Beam problems are taught in every "starting" engineering course (at least when I took and taught engineering).
 
khansaheb said:
Every engineer worth their salt will be able to solve a beam problem (If they forgot, they would dust-off their old text books and solve the beam problem - even if it is EMBARASSING) - elastic Beam problems are taught in every "starting" engineering course (at least when I took and taught engineering).
Click to expand...
You are wrong about the Computer Engineer😜

But I hope that the puzzle has answered your questions!
 
khansaheb said:
Really.... my wife is a computer engineer... If the degree is from an accredited university for a BS degree - then mechanics used to be required course in engineering.
Click to expand...
Even that will not help your wife to understand solving beams' problems. Almost every student who studies elementary physics studies beams!

Elementary physics does not give you the capability to understand beams. It is like pre-algebra compared to calculus!
 
\(\displaystyle \bold{(b)}\) an alkaline earth metal \(\displaystyle \rightarrow \ \text{Ca} \rightarrow \ \text{Calcium}\)
 
\(\displaystyle \bold{(C)}\) a noble gas \(\displaystyle \rightarrow \ \text{Ar} \rightarrow \ \text{Argon}\)
 
\(\displaystyle \bold{(d)}\) a halogen \(\displaystyle \rightarrow \ \text{Br} \rightarrow \ \text{Bromine}\)
 
You must log in or register to reply here.
Top