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

mix:easy medium hard expert

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.

Z	Symbol	Name	Mass	Period	Group	Shells	Val. e⁻	Ox. States	Type
1	H	Hydrogen	1.008	1	1	[1]	1	+1, -1	nonmetal
2	He	Helium	4.003	1	18	[2]	2	0	noble-gas
3	Li	Lithium	6.941	2	1	[2, 1]	1	+1	metal
4	Be	Beryllium	9.012	2	2	[2, 2]	2	+2	metal
5	B	Boron	10.810	2	13	[2, 3]	3	+3	metalloid
6	C	Carbon	12.011	2	14	[2, 4]	4	+4, -4	nonmetal
7	N	Nitrogen	14.007	2	15	[2, 5]	5	-3, +3, +5	nonmetal
8	O	Oxygen	15.999	2	16	[2, 6]	6	-2	nonmetal
9	F	Fluorine	18.998	2	17	[2, 7]	7	-1	nonmetal
10	Ne	Neon	20.180	2	18	[2, 8]	8	0	noble-gas
11	Na	Sodium	22.990	3	1	[2, 8, 1]	1	+1	metal
12	Mg	Magnesium	24.305	3	2	[2, 8, 2]	2	+2	metal
13	Al	Aluminum	26.982	3	13	[2, 8, 3]	3	+3	metal
14	Si	Silicon	28.086	3	14	[2, 8, 4]	4	+4, -4	metalloid
15	P	Phosphorus	30.974	3	15	[2, 8, 5]	5	-3, +3, +5	nonmetal
16	S	Sulfur	32.060	3	16	[2, 8, 6]	6	-2, +4, +6	nonmetal
17	Cl	Chlorine	35.450	3	17	[2, 8, 7]	7	-1, +1, +5, +7	nonmetal
18	Ar	Argon	39.948	3	18	[2, 8, 8]	8	0	noble-gas
19	K	Potassium	39.098	4	1	[2, 8, 8, 1]	1	+1	metal
20	Ca	Calcium	40.078	4	2	[2, 8, 8, 2]	2	+2	metal
21	Sc	Scandium	44.956	4	3	[2, 8, 9, 2]	2	+3	metal
22	Ti	Titanium	47.867	4	4	[2, 8, 10, 2]	2	+4, +3, +2	metal
23	V	Vanadium	50.942	4	5	[2, 8, 11, 2]	2	+5, +4, +3, +2	metal
24	Cr	Chromium	51.996	4	6	[2, 8, 13, 1]	1	+6, +3, +2	metal
25	Mn	Manganese	54.938	4	7	[2, 8, 13, 2]	2	+7, +4, +2	metal
26	Fe	Iron	55.845	4	8	[2, 8, 14, 2]	2	+3, +2	metal
27	Co	Cobalt	58.933	4	9	[2, 8, 15, 2]	2	+3, +2	metal
28	Ni	Nickel	58.693	4	10	[2, 8, 16, 2]	2	+2	metal
29	Cu	Copper	63.546	4	11	[2, 8, 18, 1]	1	+2, +1	metal
30	Zn	Zinc	65.380	4	12	[2, 8, 18, 2]	2	+2	metal
31	Ga	Gallium	69.723	4	13	[2, 8, 18, 3]	3	+3	metal
32	Ge	Germanium	72.630	4	14	[2, 8, 18, 4]	4	+4, +2	metalloid
33	As	Arsenic	74.922	4	15	[2, 8, 18, 5]	5	+5, +3, -3	metalloid
34	Se	Selenium	78.971	4	16	[2, 8, 18, 6]	6	-2, +4, +6	nonmetal
35	Br	Bromine	79.904	4	17	[2, 8, 18, 7]	7	-1, +1, +5	nonmetal
36	Kr	Krypton	83.798	4	18	[2, 8, 18, 8]	8	0	noble-gas
37	Rb	Rubidium	85.468	5	1	[2, 8, 18, 8, 1]	1	+1	metal
38	Sr	Strontium	87.620	5	2	[2, 8, 18, 8, 2]	2	+2	metal
39	Y	Yttrium	88.906	5	3	[2, 8, 18, 9, 2]	2	+3	metal
40	Zr	Zirconium	91.224	5	4	[2, 8, 18, 10, 2]	2	+4	metal
41	Nb	Niobium	92.906	5	5	[2, 8, 18, 12, 1]	1	+5, +3	metal
42	Mo	Molybdenum	95.950	5	6	[2, 8, 18, 13, 1]	1	+6, +4, +2	metal
43	Tc	Technetium	98.000	5	7	[2, 8, 18, 13, 2]	2	+7, +4	metal
44	Ru	Ruthenium	101.070	5	8	[2, 8, 18, 15, 1]	1	+4, +3, +2	metal
45	Rh	Rhodium	102.910	5	9	[2, 8, 18, 16, 1]	1	+3, +1	metal
46	Pd	Palladium	106.420	5	10	[2, 8, 18, 18]	0	+2, +4	metal
47	Ag	Silver	107.870	5	11	[2, 8, 18, 18, 1]	1	+1	metal
48	Cd	Cadmium	112.410	5	12	[2, 8, 18, 18, 2]	2	+2	metal
49	In	Indium	114.820	5	13	[2, 8, 18, 18, 3]	3	+3	metal
50	Sn	Tin	118.710	5	14	[2, 8, 18, 18, 4]	4	+4, +2	metal
51	Sb	Antimony	121.760	5	15	[2, 8, 18, 18, 5]	5	+5, +3, -3	metalloid
52	Te	Tellurium	127.600	5	16	[2, 8, 18, 18, 6]	6	-2, +4, +6	metalloid
53	I	Iodine	126.900	5	17	[2, 8, 18, 18, 7]	7	-1, +1, +5, +7	nonmetal
54	Xe	Xenon	131.290	5	18	[2, 8, 18, 18, 8]	8	0	noble-gas
55	Cs	Cesium	132.910	6	1	[2, 8, 18, 18, 8, 1]	1	+1	metal
56	Ba	Barium	137.330	6	2	[2, 8, 18, 18, 8, 2]	2	+2	metal
72	Hf	Hafnium	178.490	6	4	[2, 8, 18, 32, 10, 2]	2	+4	metal
73	Ta	Tantalum	180.950	6	5	[2, 8, 18, 32, 11, 2]	2	+5	metal
74	W	Tungsten	183.840	6	6	[2, 8, 18, 32, 12, 2]	2	+6, +4	metal
75	Re	Rhenium	186.210	6	7	[2, 8, 18, 32, 13, 2]	2	+7, +4	metal
76	Os	Osmium	190.230	6	8	[2, 8, 18, 32, 14, 2]	2	+4, +3	metal
77	Ir	Iridium	192.220	6	9	[2, 8, 18, 32, 15, 2]	2	+4, +3	metal
78	Pt	Platinum	195.080	6	10	[2, 8, 18, 32, 17, 1]	1	+4, +2	metal
79	Au	Gold	196.970	6	11	[2, 8, 18, 32, 18, 1]	1	+3, +1	metal
80	Hg	Mercury	200.590	6	12	[2, 8, 18, 32, 18, 2]	2	+2, +1	metal
81	Tl	Thallium	204.380	6	13	[2, 8, 18, 32, 18, 3]	3	+3, +1	metal
82	Pb	Lead	207.200	6	14	[2, 8, 18, 32, 18, 4]	4	+4, +2	metal
83	Bi	Bismuth	208.980	6	15	[2, 8, 18, 32, 18, 5]	5	+3, +5	metal
84	Po	Polonium	209.000	6	16	[2, 8, 18, 32, 18, 6]	6	+4, +2	metalloid
85	At	Astatine	210.000	6	17	[2, 8, 18, 32, 18, 7]	7	-1, +1	metalloid
86	Rn	Radon	222.000	6	18	[2, 8, 18, 32, 18, 8]	8	0	noble-gas

Chemistry

Periodic Table5

Atomic Number

Atomic Mass

Electron Config Count

Valence Electrons

Oxidation State

Chemical Calculations5

Molar Mass

pH Calculator

Molarity

Stoichiometry

Gas Laws

Element Reference

Elements (Z = 1–86, excluding f-block)