Questions tagged [chemistry]
A puzzle that makes use of chemical knowledge, such as the names and atomic numbers of chemical elements.
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An engineer, a mechanic and an athlete walk into a bar
...to exchange puzzles about the thing they talked about the other day and have a drink.
The engineer showed these numbers:
2, 8, 14, 2, 99
2, 4, 0, 0, 1
The ...
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Element lost? Call a scientist!
I was searching for a specific element, but I couldn't find it. So I called three scientists in different countries in order to find the element.
What was the element I was looking for, and where am ...
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This won't work with US states
This puzzle is part of the Monthly Topic Challenge #12: mobile-friendly puzzles.
For each of the following sequences, identify the three missing terms (marked by '???'):
Nitrogen, Fluorine, Argon, ...
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Chem-is-try is hard
You are a chemist and ask your coworker to puzzle you. They give you this puzzle and ask you to solve it.
LiPSiNArHCaScMgHCaFPSiK
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Valence Levels?
Each yellow and orange (barred to distinguish) dot gets a letter.
The center green dot does not get a letter.
The final answer is a relevant word, once you unscramble it.
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Five element puzzle
Born from water sun stone be B.
Five elements are ki.
The first give three, the rest he.
In five symbols, eight see.
From them form, evidently
That which is written for thee.
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Longer Than Usual
This puzzle is part of the Monthly Topic Challenge #1: Restricted Title: xkcd 1xxx
One for my fellow mapheads and pub quiz fans... There are many puzzles on PSE which use one-or-two-letter ...
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The return of the messy chemist
My Chemistry teacher is at it again. Today, I cautiously approached his office and stopped in the doorway instead of walking right in - and it's a good job I did. There he was again - bent over on the ...
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Alchemy in a Tin Kit
As usually happens when rummaging through one's grandparents' attic, I unwittingly discovered a seemingly ancient papyrus manuscript. It was stored in an old tin box along with some utensils. I ...
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PSE Advent Calendar 2021 (Day 22): Quick Math Card
This puzzle is part of the Puzzling StackExchange Advent Calendar 2021. The accepted answer to this question will be awarded a bounty worth 50 reputation.< Previous Door Next Door >
I found the ...
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Number of elements as compound
What simple compound is precious to life and encodes the total number of elements?
What other thing does it code and is revered by some as precious to life?
Accepted solution should show how the ...
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What kind of sequence is this?
Start with
1
1 1
2 1
2 1 1 8
2 1 2 8
?
Your answer should explain what these numbers represent.
Hint 1:
Hint 2:
Hint 3
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The messy chemist
This morning I walked into my Chemistry teacher's office to ask him a question and felt my foot collide with something. I looked down at the floor and saw a load of Periodic Table element flashcards ...
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Bananas for chemistry
Going bananas for chemistry...
First I have standards, and my yearbook likely starts with why I'm part of AVEN. In the end, I name four art galleries that have a sweet founder.
My parents were ...
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The Blue Periodic Puzzle
This puzzle follows from the Purple Periodic Puzzle and Green Periodic Puzzle (these puzzles are solved independently).
Yet another periodic table has been uncovered and hides a secret word.
Can you ...
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The Green Periodic Puzzle
This puzzle follows from the Purple Periodic Puzzle (these puzzles are solved individually).
Another strange periodic table has appeared and it's hiding a secret word.
Can you find out what's strange ...
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The Purple Periodic Puzzle
Below is a periodic table that's hiding a secret word.
Can you find out what's strange about this purple periodic table and find the answer.
Text-only version:
...
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Earth Science | Chemistry + Flags
An entry in Fortnightly Topic Challenge #48: Unusual tag mix
Which famous chemist is represented by these flags? Go big or go home!
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What's my number riddle
The first and the last of the days of the week,
I and Ζ they are numbers in Latin and Greek.
In N and in P, and period and group,
Of them I consist and I always have been
But now in my name, what ...
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Words with Alchemists
You are probably familiar with Word Ladders, where you attempt to transform one word into another by switching one letter at a time, with each transformation forming a new word. This puzzle is similar....
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An Elementary Connect Fano Plane
I never thought I'd be able to make a connect Fano plane out of chemical elements, since there are so few to choose from. And I was right, but I got really close.
So if you haven't seen previous ...
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Scientifically Themed Rebus/Dingbat Puzzles - Part 4
The same basic idea (I have a lot of these): science-styled expressions that represent some popular media. Previously, some guesses were for things I would say aren't that well known, so keep in mind ...
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Practical Chemo Opus
Herb Clark likes few substances, such as:
CARBON, NEON, SILICON, PHOSPHORUS, IRON, COPPER, ARSENIC, KRYPTON, ...
Find others per inclination.
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Scientifically Themed Rebus/Dingbat Puzzles
Below I have created a list of a few "scientific" expressions that represent some form of popular media, with the type stated. Hope you enjoy.
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An Evolutionary Experiment
Dr. Farnsworth entered class today and announced that we were going to conduct an experiment to see if we could force cells to evolve to communicate with us. The experiment is as follows: we are given ...
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Dr Aphorism's advice
My old science teacher Dr Aphorism was brilliant – not just at teaching (and, of course, science), but also at providing invaluable life advice. I always remember one day when I went to her office to ...
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What's the graph relation? #4
What's the relation that joins the nodes?
Previous
What's the graph relation? #1
What's the graph relation? #2
What's the graph relation? #3
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A special chemical compound with a touch of math
What do you get when mixing
Aluminium, Neon, Nitrogen, Sulfur, Titanium, Vanadium,
and two math ingredients
$\lim_{n\to\infty}(1+\dfrac{1}{n})^n $ and (degree,?,seconds)
and
don't ask ...
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Troubling Triples
The points appear to be connected, but in the end, we should have worked under aqueous conditions.
Substance
Temperature (K)
Pressure (kPa)
Acetylene
173.1
26.6
Ammonia
109.5
21.9
Argon
115.8
74.1
...
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Chemistry Riddle
Here is a riddle for all you science nerds out there! Each clue will give you a word or chemical. Tell me how these link together.
Clue 1: Work out the chemical and take its atomic symbol
part 1: ...
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Who doesn’t belong in the group? [closed]
Identify the ones that are oddballs
B
C
Ba
W
H
Fe
Si
Br
Rn
I
N
O
P
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Professor Clark’s Precious Chemical Connections
They are primarily eight precious ones.
Fill in the X s with appropriate letters to reveal all the 8 Precious Metals.
Each X represents a letter.
1,5,7..vertical. 2,3,4,6,8..horizontal
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Elementary, my dear …
My list for today
Iodine-Sulfur+Americium-Scandium:Phosphorus
Iodine-Titanium+Molybdenum+Thorium+Yttrium-Lithium:Helium
Praseodymium+Oxygen+Vanadium+Erbium+Boron+Sulfur-Lithium:Aluminum
...
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Professor Roman loves to teach unorthodox Chemistry
His famous phrase in class was “ Elementary Watson”.
Given:
$IRON$ = $5$ - $4$
$M$ = $6$ - $9$
Find the Missing Element M.
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The Adventures of Jack #3
He's back at it again!
'Twas the night before Christmas,
And Jack only wanted one thing.
A hat - what else would he need?
Jack thought about colours, possibly crimson.
But the way he was - he'd ...
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A Christmas Gift
Thanksgiving done and Christmas around the corner. Both mom and dad were whispering in the hallways glancing over their shoulders to ensure no one was listening. I knew they were planning something ...
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Guess what letter conforming each word
This is an entry in the Fortnightly Topic Challenge #41: Short and Sweet.
1 letter only could be mean anything.
With an additional letter in front, could be used as medicine component and something ...
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A Periodic Puzzle
Entry into Fortnightly Topic Challenge #38: Reusing Information 1
Isn't it nice to have the same information to depend on, that you know will be reused? ... Wait, who said that you were getting that ...
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Odd-one-out chemistry word play
Find the odd one out:
Onions
Thioacetone
Naphthalene
Cyclobutadiene
Guanidine
Cadaverine
Carbon diselenide
Benzene
Edit: I forgot Benzene but I added it.
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Acids and Bases
I have 6 solutions. 3 of them are acids, and 3 of them are bases. The acids and the bases (HCl and NaOH respectively) both have solution with a concentration of $0.1M$, $1M$, and $10M$. I don't know ...
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Longest word made from a chemical molecule?
I was wearing my Bacon t-shirt, and got to wondering, what's the longest word made solely with the atomic symbols of every atom in a compound?
For example, ${CO_{2}}$ would be coo, since there are ...
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Means of Transportation
The answer to this puzzle is a vehicle or a type of transportation. It is created by using simply parts of air, a noble metal and a heavy metal. What is it?
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Lifting is my best known work
Virtuous, but I'm of no form
My seat's right at the very top
Where gangs of many is the norm
My one peer is one that goes 'pop'
Though my uses are many
Lifting is my best known work
...
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Dismissing Lewis [closed]
If I were to take a benzene molecule:
And throw physics out the door, replacing the carbon atoms with iron,
What would it be called now?
Hint:
Credits: SPOILER ALERT, ANSWER WITHIN
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First I'm the parent and then I'm the daughter
A simple, one sentence riddle which I'm confident you'll know when you have the correct answer.
First I'm the parent, but I lose He and some energy, then become the daughter.
What does this riddle ...
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Single letter chemical elements on a 2x2 grid
In the past somebody showed me the puzzle below. I remember the answer but not the entire solution. Here it goes:
On a grid of 2x2 put four single letter chemical elements. The result should have ...
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A longer chemical word
YEs, LuSH CHOCoLaTe CrYPTaNAlYSiS!
...are all English words formed by chaining a string of distinct, standard chemical symbols.
A $19$ character example is IrReCoNCILaBiLiTiEs.
Can you find two ...
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What is my real name?
My Father is a Chemist
My Mother is a Mathematician
They call me iron59
What is my real name?
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Can you guess the name of Jim's girlfriend?
Ben and Jim are best friends and like playing pranks among themselves. Once Ben sent a fake phishing link to Jim to know his girlfriend's name but Jim was clever and instead of entering his girlfriend'...
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