Chemical Elements List

Hydrogen (H)
Z=1, lightest element, 75% of universe by mass
Helium (He)
Z=2, noble gas, second most abundant in universe
Carbon (C)
Z=6, basis of organic chemistry, 4 bonds
Nitrogen (N)
Z=7, 78% of atmosphere, essential for life
Oxygen (O)
Z=8, 21% of atmosphere, cellular respiration
Iron (Fe)
Z=26, most used metal, hemoglobin core
Gold (Au)
Z=79, precious metal, excellent conductor
Copper (Cu)
Z=29, electrical wiring, antimicrobial
Silicon (Si)
Z=14, semiconductor, 2nd most abundant in crust
Uranium (U)
Z=92, nuclear fuel, radioactive
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About Elements

What this tool does

Chemistry tools calculate molarity, dilution ratios, pH, molecular weight, ideal gas properties, electron configurations, oxidation numbers, and solution preparation volumes.

Why use this tool

Lab work requires precise concentration calculations. Errors in dilution math waste reagents, invalidate experiments, and can create safety hazards. These calculators apply standard chemistry formulas with validated inputs.

How it works

Molarity tools divide moles of solute by liters of solution. Dilution applies C1V1 = C2V2. pH converts hydrogen ion concentration to the logarithmic scale. Molecular weight sums atomic masses from the periodic table based on the chemical formula.

Pro tip

When preparing dilutions, always add solute to solvent, not the reverse. This is especially important with concentrated acids and exothermic reactions where splashing can cause burns.

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