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Chemistry

10 games

Periodic table properties, molar mass, pH, and molarity calculations. Scroll down for the element reference table.

Random Mix — Chemistry

A shuffled session pulled from games in this scope. Same scoring style across the whole session. Pick a difficulty to start.

easy(10)medium(10)hard(10)expert(10)

Periodic Table5

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Atomic Number

Exact

Given an element name or symbol, type its atomic number

Atomic Mass

Closeness

Given an element, type its atomic mass

Electron Config Count

Exact

Count electrons in a specific shell or subshell

Valence Electrons

Exact

How many valence electrons does this element have?

Oxidation State

Exact

What is the most common oxidation state of this element?

Chemical Calculations5

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Molar Mass

Closeness

Calculate the molar mass of a compound

pH Calculator

Closeness

Calculate pH from hydrogen ion concentration

Molarity

Closeness

Calculate solution concentration from mass, molar mass, and volume

Stoichiometry

Closeness

Calculate molar ratios from balanced equations

Gas Laws

Closeness

Boyle's, Charles's, Combined, and Ideal gas law

Element Reference

Shells = electron count per shell (innermost first). Val. e⁻ = valence electrons. Ox. States = common oxidation states.

ZSymbolNameMassPeriodGroupShellsVal. e⁻Ox. StatesType
1HHydrogen1.00811[1]1+1, -1nonmetal
2HeHelium4.003118[2]20noble-gas
3LiLithium6.94121[2, 1]1+1metal
4BeBeryllium9.01222[2, 2]2+2metal
5BBoron10.810213[2, 3]3+3metalloid
6CCarbon12.011214[2, 4]4+4, -4nonmetal
7NNitrogen14.007215[2, 5]5-3, +3, +5nonmetal
8OOxygen15.999216[2, 6]6-2nonmetal
9FFluorine18.998217[2, 7]7-1nonmetal
10NeNeon20.180218[2, 8]80noble-gas
11NaSodium22.99031[2, 8, 1]1+1metal
12MgMagnesium24.30532[2, 8, 2]2+2metal
13AlAluminum26.982313[2, 8, 3]3+3metal
14SiSilicon28.086314[2, 8, 4]4+4, -4metalloid
15PPhosphorus30.974315[2, 8, 5]5-3, +3, +5nonmetal
16SSulfur32.060316[2, 8, 6]6-2, +4, +6nonmetal
17ClChlorine35.450317[2, 8, 7]7-1, +1, +5, +7nonmetal
18ArArgon39.948318[2, 8, 8]80noble-gas
19KPotassium39.09841[2, 8, 8, 1]1+1metal
20CaCalcium40.07842[2, 8, 8, 2]2+2metal
21ScScandium44.95643[2, 8, 9, 2]2+3metal
22TiTitanium47.86744[2, 8, 10, 2]2+4, +3, +2metal
23VVanadium50.94245[2, 8, 11, 2]2+5, +4, +3, +2metal
24CrChromium51.99646[2, 8, 13, 1]1+6, +3, +2metal
25MnManganese54.93847[2, 8, 13, 2]2+7, +4, +2metal
26FeIron55.84548[2, 8, 14, 2]2+3, +2metal
27CoCobalt58.93349[2, 8, 15, 2]2+3, +2metal
28NiNickel58.693410[2, 8, 16, 2]2+2metal
29CuCopper63.546411[2, 8, 18, 1]1+2, +1metal
30ZnZinc65.380412[2, 8, 18, 2]2+2metal
31GaGallium69.723413[2, 8, 18, 3]3+3metal
32GeGermanium72.630414[2, 8, 18, 4]4+4, +2metalloid
33AsArsenic74.922415[2, 8, 18, 5]5+5, +3, -3metalloid
34SeSelenium78.971416[2, 8, 18, 6]6-2, +4, +6nonmetal
35BrBromine79.904417[2, 8, 18, 7]7-1, +1, +5nonmetal
36KrKrypton83.798418[2, 8, 18, 8]80noble-gas
37RbRubidium85.46851[2, 8, 18, 8, 1]1+1metal
38SrStrontium87.62052[2, 8, 18, 8, 2]2+2metal
39YYttrium88.90653[2, 8, 18, 9, 2]2+3metal
40ZrZirconium91.22454[2, 8, 18, 10, 2]2+4metal
41NbNiobium92.90655[2, 8, 18, 12, 1]1+5, +3metal
42MoMolybdenum95.95056[2, 8, 18, 13, 1]1+6, +4, +2metal
43TcTechnetium98.00057[2, 8, 18, 13, 2]2+7, +4metal
44RuRuthenium101.07058[2, 8, 18, 15, 1]1+4, +3, +2metal
45RhRhodium102.91059[2, 8, 18, 16, 1]1+3, +1metal
46PdPalladium106.420510[2, 8, 18, 18]0+2, +4metal
47AgSilver107.870511[2, 8, 18, 18, 1]1+1metal
48CdCadmium112.410512[2, 8, 18, 18, 2]2+2metal
49InIndium114.820513[2, 8, 18, 18, 3]3+3metal
50SnTin118.710514[2, 8, 18, 18, 4]4+4, +2metal
51SbAntimony121.760515[2, 8, 18, 18, 5]5+5, +3, -3metalloid
52TeTellurium127.600516[2, 8, 18, 18, 6]6-2, +4, +6metalloid
53IIodine126.900517[2, 8, 18, 18, 7]7-1, +1, +5, +7nonmetal
54XeXenon131.290518[2, 8, 18, 18, 8]80noble-gas
55CsCesium132.91061[2, 8, 18, 18, 8, 1]1+1metal
56BaBarium137.33062[2, 8, 18, 18, 8, 2]2+2metal
72HfHafnium178.49064[2, 8, 18, 32, 10, 2]2+4metal
73TaTantalum180.95065[2, 8, 18, 32, 11, 2]2+5metal
74WTungsten183.84066[2, 8, 18, 32, 12, 2]2+6, +4metal
75ReRhenium186.21067[2, 8, 18, 32, 13, 2]2+7, +4metal
76OsOsmium190.23068[2, 8, 18, 32, 14, 2]2+4, +3metal
77IrIridium192.22069[2, 8, 18, 32, 15, 2]2+4, +3metal
78PtPlatinum195.080610[2, 8, 18, 32, 17, 1]1+4, +2metal
79AuGold196.970611[2, 8, 18, 32, 18, 1]1+3, +1metal
80HgMercury200.590612[2, 8, 18, 32, 18, 2]2+2, +1metal
81TlThallium204.380613[2, 8, 18, 32, 18, 3]3+3, +1metal
82PbLead207.200614[2, 8, 18, 32, 18, 4]4+4, +2metal
83BiBismuth208.980615[2, 8, 18, 32, 18, 5]5+3, +5metal
84PoPolonium209.000616[2, 8, 18, 32, 18, 6]6+4, +2metalloid
85AtAstatine210.000617[2, 8, 18, 32, 18, 7]7-1, +1metalloid
86RnRadon222.000618[2, 8, 18, 32, 18, 8]80noble-gas