Periodic Table
Name That Element
Ridiculously Small or Big
USNCO Concepts
Miscellaneous
100
What does the symbol Au stand for?
Gold
100
Which element makes up diamonds and graphite and has an entire branch of chemistry behind it?
Carbon
100
How many years ago was the first element discovered?
357 years ago
100
What is a mole?
Not this one ⬆️
It is a unit of measurement and is equal to 6.022 * 1023 particles.
100
What is the chemical formula for water?
H2O
200
Who created the first periodic table?
Dmitri Mendeleev
200
What is the most abundant gas in our atmosphere and is also used as laughing gas at the dentist?
Nitrogen
200
How cold is absolute zero?
-273.15 degrees Celsius
200
Sometimes a solid skips the liquid phase entirely and turns straight into a gas. What is this process called?
Sublimation
200
What chemical causes the burning sensation when eating spicy peppers?
Capsaicin
300
How many elements were known when the first periodic table was created?
63
300
What is the only metal that is a liquid at room temperature?
Mercury
300
How many times could you divide 1 meter in half before reaching roughly the size of an atom?
Around 30 times
300
Can water, ice, and steam exist at the same time, and if so, what is it called?
It is possible, and it is called the triple point
300
How long is a DNA molecule when stretched out?
2 meters (6.5 feet)
400
What is the only letter that doesn't appear on the periodic table?
J
400
What element was named after the only person to win a Nobel Prize in two different scientific fields?
Curium
400
How wide is a human hair compared to an atom?
Roughly 1000000x wider
400
What effect occurs when adding an ion causes less of a slightly soluble compound to dissolve?
Common-ion effect
400
If you took all the carbon out of a human, how many graphite pencils could you make?
About 9000
500
How many elements are named after places?
41
500
What element is this?
Bismuth
500
What is the estimated number of atoms in the observable universe?
Approximately 1080 atoms
500
What term describes different structural forms of the same element, such as diamond and graphite?
Alletropes
500
The term "atom" comes from a Greek word. What does that word mean?
Indivisible (meaning cannot be cut)