Category Elimination - Elements

In each group, name any answer which matches the first category to reveal the second category, then name any answer which applies to both categories to reveal a third, and so on.
# = the number of answers possible.
Answer must correspond to the highlighted yellow box.
Quiz by Stewart
Rate:
Last updated: January 9, 2020
First submittedJanuary 9, 2020
Times taken13,556
Rating4.45
5:00
Enter element here
0
 / 20 guessed
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Keep scrolling down for answers and more stats ...
Green Categories
79
Elements ending in "ium"
26
... with an atomic number below 50
9
... in the 4th row of the Periodic Table
2
... whose symbol is a single letter
1
... with 9 letters in its name
Potassium
 
Orange Categories
38
Elements which are transition metals
13
... containing the letter A
5
... with an odd atomic number
3
... which was discovered after 1800
1
... which does not end in "dium"
Tantalum
Blue Categories
59
Elements discovered before 1850
20
... with an atomic number above 49
8
... with at most 6 letters in its name
2
... in the 5th row of the Periodic Table
1
... whose symbol is a single letter
Iodine
 
Purple Categories
104
Elements with a 2-letter symbol
29
... which are Actinides or Lanthanides
9
... with 10 or more letters in its name
4
... which was discovered after 1945
1
... and not named after a person
Californium
+11
Level 75
Jan 15, 2020
The answer to the yellow clue was really hard. I eventually figured out the others, but not that one.
+1
Level 67
Feb 19, 2020
Yeah
+1
Level 75
Mar 11, 2020
Yeah
+1
Level 65
Jun 2, 2020
Yeah
+2
Level 84
Jul 13, 2020
You probably have some in your pocket (in your cellphone).
+5
Level 77
Jul 22, 2020
Just out of reach, right?
+2
Level 70
Dec 20, 2020
I was super lucky and guessed that element at the second step - no idea why it was the first of the 13 possibilities to come to mind. Really fun quiz. Would love to see more periodic table quizzes.
+9
Level 65
Feb 24, 2020
Very hard one. Requires a very good knowledge of the periodic table and then some trivia on top of it.
+1
Level 76
Feb 12, 2021
Chemistry is my kryptonite. I guessed my face off and somehow managed to get 16/20, despite not knowing what an atomic number is or actinides, or what element is in what row. Who needs brains when you're born lucky ;)
+1
Level 76
Feb 12, 2021
Which makes me think a quiz about fictional elements would be great! Adamantium and kryptonite come immediately to mind.
+2
Level 32
Feb 27, 2021
Krypton exists though
+1
Level 48
Apr 7, 2020
100% I'm so proud lol
+1
Level 80
Apr 19, 2020
Took me some time to get Iodine, but still managed to finish with 52 seconds left. Excellent quiz.
+1
Level 84
Jul 13, 2020
I thought that was the easiest of the 4.
+2
Level 45
Apr 24, 2020
IODINE ALL THE WAY!!!!!
+3
Level 46
Jun 15, 2020
genuinely the greatest quiz ever created xx
+16
Level 46
Jun 15, 2020
how kind of u to make a quiz about me
+1
Level 75
Jul 14, 2020
More!
+1
Level 79
Jul 14, 2020
Bit tricky that...
+1
Level 56
Jul 20, 2020
Hi, nice quiz! The description on the featured page talks about countries rather than elements.
+1
Level 49
Jul 20, 2020
easy! one minute left
+1
Level 49
Jul 20, 2020
P.S. I know that's not fast, but don't comment below telling me your time :) also nice quiz
+1
Level 68
May 23, 2021
finished with 2 minutes left
+1
Level 46
Jul 20, 2020
Not to be irritating, but I think it should read 'with 6 letters or fewer in its name'
+1
Level 74
Jul 20, 2020
Yes, please change 'less' to 'fewer'.
+1
Level 78
Jul 20, 2020
I scored 13, which is better than I expected considering I had no idea what a transition metal is, nor had I ever heard of

Actinides or Lanthanides. I made some lucky guesses.

+2
Level 76
Jul 21, 2020
Blue clue number 2: ".. with an atomic above 49" ... is missing "number" (or mass)?
+1
Level 68
Jul 21, 2020
Very good spot, thanks! It seems several thousand people read to quickly like me and didn't spot it :P
+1
Level 67
Jul 24, 2020
I didn't realise you could answer the same element twice 😩
+1
Level 60
Aug 14, 2020
Are Lanthanides and Actinides not considered transition metals?
+2
Level 57
Oct 1, 2020
lead
+1
Level 15
Dec 10, 2020
this quiz was hard
+1
Level 31
Mar 22, 2021
I have a periodic table of elements puzzle and I still didn’t get all of them right! :(
+1
Level 36
May 18, 2021
great quiz! Just wondering, how do you put the check mark in the answers column but still have the correct answers within it...if that makes sense.
+1
Level 68
May 18, 2021
The easiest way is to separate answers by | (the pipe) in Step 2, this will produce auto typeins in Step 3, separating one answer per line. You can then set this to custom (to make sure it doesn't change) and then go back to Step 2 and change the visible text to be a check character.