Why only the first 36 elements?

Hydrogen through krypton spans the first four periods, which is what most intro chemistry classes actually test. It's also a learnable number: 36 cards is one or two focused sessions, not a semester project.

Which element symbols are hardest to remember?

The Latin-derived ones: Na (sodium), K (potassium), and Fe (iron) catch almost everyone. Miss them once and the deck automatically brings them back around.

Do the cards include atomic numbers?

Yes. Every card's back shows the symbol and the atomic number, so you learn both together.

Yes, all 36 cards, no sign-up needed.

Periodic Table Flash Cards: First 36

Flash cards36 cards~5 minScience

All 36 cards in this deck

HydrogenH · atomic number 1
HeliumHe · atomic number 2
LithiumLi · atomic number 3
BerylliumBe · atomic number 4
BoronB · atomic number 5
CarbonC · atomic number 6
NitrogenN · atomic number 7
OxygenO · atomic number 8
FluorineF · atomic number 9
NeonNe · atomic number 10
SodiumNa · atomic number 11
MagnesiumMg · atomic number 12
AluminumAl · atomic number 13
SiliconSi · atomic number 14
PhosphorusP · atomic number 15
SulfurS · atomic number 16
ChlorineCl · atomic number 17
ArgonAr · atomic number 18
PotassiumK · atomic number 19
CalciumCa · atomic number 20
ScandiumSc · atomic number 21
TitaniumTi · atomic number 22
VanadiumV · atomic number 23
ChromiumCr · atomic number 24
ManganeseMn · atomic number 25
IronFe · atomic number 26
CobaltCo · atomic number 27
NickelNi · atomic number 28
CopperCu · atomic number 29
ZincZn · atomic number 30
GalliumGa · atomic number 31
GermaniumGe · atomic number 32
ArsenicAs · atomic number 33
SeleniumSe · atomic number 34
BromineBr · atomic number 35
KryptonKr · atomic number 36

Flip through them with the card player above. No sign-up.

About this deck

The first 36 elements (hydrogen through krypton) cover nearly everything a first chemistry course throws at you: the elements in water, air, salt, and steel, the first three full periods of the table, and the first row of transition metals. Each card shows the element name on the front and its symbol plus atomic number on the back.

The symbols are the tricky part, because a handful of them come from Latin instead of English: sodium is Na (natrium), potassium is K (kalium), and iron is Fe (ferrum). Those are exactly the cards you'll miss on the first pass, and exactly the ones the deck re-queues until they stick. The atomic number rides along on each card because knowing that carbon is 6 and oxygen is 8 makes later topics (electron configurations, periodic trends) feel less like starting over.

Use this deck the way chemistry teachers wish everyone would: short daily runs before the quiz, not one cram the night of. When the session report shows a clean run, flip your practice and write the symbols from memory on paper. Recognizing "Mn" and producing "Mn" are different skills, and exams ask for the second one.

Frequently asked questions

Why only the first 36 elements?: Hydrogen through krypton spans the first four periods, which is what most intro chemistry classes actually test. It's also a learnable number: 36 cards is one or two focused sessions, not a semester project.
Which element symbols are hardest to remember?: The Latin-derived ones: Na (sodium), K (potassium), and Fe (iron) catch almost everyone. Miss them once and the deck automatically brings them back around.
Do the cards include atomic numbers?: Yes. Every card's back shows the symbol and the atomic number, so you learn both together.
Is this deck free?: Yes, all 36 cards, no sign-up needed.

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