Chemistry handbook, tables, and simulator guides

The total number of elements, plus the names, symbols, and atomic masses of the first 40 elements in one table.

Type your formula and get its molar mass instantly. Includes a table of all 118 elements.

Position on the periodic table, differences in properties, and metalloids.

We compared eight apps and websites by price, language, strengths, and who each one fits.

Attraction and repulsion between atoms, the potential energy curve, σ and ε, and a simulator guide.

How rubbing moves electrons, why a charged balloon attracts a neutral wall, and a simulator guide.

The three particles of an atom, mass number, charge, ions, valence electrons, and a guide to building an atom.

Molecules vs. ionic compounds, bond length and energy, and a guide to building 32 compounds.

The definition of an isotope, mass number, natural abundance, and an average atomic mass problem.

Electronegativity differences, δ+ and δ− charges, dipoles, and polar and nonpolar bonds.

The Coulomb's law formula, a worked example, the link to ionic bonds, and a simulator guide.

Nuclear stability, the chart of nuclides, β⁻ and β⁺ decay, and a guide to building a nucleus.

How light affects molecules, greenhouse gases, the ozone layer, and a simulator guide.

The gold foil experiment, observations and conclusions, alpha particle deflection, and a simulator guide.

Electron geometry for 2–6 domains, a molecular shape chart, and how to count lone pairs.

Count bonds and lone pairs to recognize linear, tetrahedral, pyramidal, and bent shapes.

How to use three rules to write 1s²2s²… notation for the first 20 elements.

How to find shells and outer electrons from the period and group, with the first 20 elements as examples.

The direction of radius, ionization, electronegativity, and metallic character, with reasons and exceptions.

The key idea of each of the four models, the discoveries that changed them, and each model's flaw.

See how a metal gives up electrons and how oppositely charged ions attract, with 20 compounds.

How positive ions and free electrons explain why metals conduct electricity and are malleable.

Compare the particles, bonds, and properties of the four lattice types with 11 examples.

Tell four types of bonds apart by electron distribution and electronegativity difference.

How the two models differ, single, double, and triple bonds, and the shapes and angles of 20 compounds.

Dot placement rules, the eight-group pattern, and a simulator for the first 30 elements.

The density formula, the densities of eight materials, and when objects float or sink.

How two gases mix, counting the particles on each side, and the effect of temperature.

Melting and boiling points of four substances, kelvins and °C, and the attraction between particles.

How pressure forms, the three factors that affect it, and a simulator guide.

Formulas for the three laws, example problems, and P–V and P–T graphs.

How to read a phase diagram, the triple point, sublimation, and liquefying a gas with pressure.

The difference between a substance and an object, plus atoms, molecules, ions, and a zoomed-in view of particles.

A table of the differences between solids, liquids, and gases, with particle arrangement and motion.

Melting, boiling, condensation, sublimation, particle motion, and a simulator guide.

The definition of diffusion, why it happens, everyday examples, and a simulator guide.

How temperature, state, particle mass, and concentration difference affect diffusion, with a simulator guide.

What causes pressure, the Boyle's law formula, a worked example, and a simulator guide.

How to choose a method by density and solubility, a chart of seven gases, and a simulator guide.

The two types of mixtures, how they differ from compounds, and the iron and sulfur example.

The definition of a pure substance, how to test with melting point, and common mistakes.

The differences between filtration, evaporation, and distillation, the equipment, and a selection table.

How to tell them apart by whether a new substance forms, four signs of chemical change, and examples.

Hardness, electrical conductivity, flexibility, magnetism, and examples of choosing a material.

Test six materials in a bulb circuit and learn why metals conduct electricity.

One kind of atom, atomic number, element symbols, and how to tell an element from a compound.

How to tell pure substances from mixtures by flat and sloped curves.

Separating dyes into spots, calculating Rf, and telling pure substances from mixtures.

How substances spread on their own, what affects the rate, and tests with 10 substances.

How much acids ionize, differences in pH and conductivity, and the mix-up between strength and concentration.

How do adding solute or water, evaporating, and pouring out change concentration?

A pH chart of 12 liquids and the rule that dilution moves pH toward 7.

The c = n / V formula, worked examples, the mol/L unit, and the saturation limit.

The A = ε·l·c formula, absorbance and transmittance, solution color, and the effect of wavelength.

H₃O⁺ and OH⁻ ions, the 0–14 scale, and why 1 pH unit means a factor of 10.

Add substances to a beaker and track solubility, percent dissolved, acidity, and reaction equations.

A table of acid and base properties, and a pH comparison of seven everyday substances.

The colors of three indicators in acids, neutral solutions, and bases, plus a simulator guide.

Acid-base reactions, salt-forming equations, and pH changes shown with a slider.

Burette, indicator, end point, a concentration example, and the Titration lab.

Flame colors of seven metal ions, test steps, and a simulator guide.

Cation and anion identification charts and a lab guide with ten unknown samples.

Rules for naming oxides, acids, bases, and salts, how to read formulas, and a lab with a test.

Follow substitution, addition, and elimination, Markovnikov's rule, and carbocations step by step.

Balance the burning of methane step by step, then practice on 20 reactions.

Work out products and leftovers, from a sandwich recipe to real reactions.

Rules for writing a compound's formula from its cation and anion, with examples and common mistakes.

Synthesis, decomposition, single and double replacement reactions, signs of a reaction, and the activity series.

Oxidation, reduction, and oxidation state changes in 20 compounds.

Forms of energy, heat transfer, heat capacity, and final temperature.

The effects of temperature, concentration, surface area, catalysts, and inhibitors.

Reversible reactions, dynamic equilibrium, and Le Chatelier's principle.

The anode, cathode, electron flow, and salt bridge of the zinc–copper cell.

Methane to hexane: names, formulas, boiling points, and the homologous series.

−OH, −COOH, −NH₂, and −Cl groups, and alcohols, carboxylic acids, amines, and haloalkanes.

40 reactions in five categories, an answer table, and a way to check yourself.

The activity series of metals and halogens, the hydrogen line rule, and simulator steps.

A table of rules, step-by-step solutions, and a simulator with 20 compounds to practice.

Oxidizing and reducing agents, electron balance steps, and 20 reactions at 3 levels.

Why trash floats or sinks, 4 sorting categories, simulator steps, and tasks.

Reactions of SO₂ and NO₂, rain pH, sources and solutions, and simulator steps.

Pollutants, an AQI table, four sources and solutions, and simulator steps.

Four pollutants, the stages of eutrophication, solutions, and simulator steps.

Solubility rules, precipitate colors, ionic equations, and filtering and drying steps.

The Haber process, the contact process, yield versus rate, and 8 industrial processes.

Naming steps, class suffixes, isomers, and a simulator with 140 compounds.

A table of six tests, the reasons behind them, common mix-ups, and simulator steps.