Eleven instruments for the exam topics: weigh across SI prefixes, heat a beaker, build atoms and ions, name compounds, and read solubility curves. Change any value and the instrument updates.
Place two masses on the pan, each with any SI prefix from tera to pico. The balance adds them, converts the total into every prefix, and compares it with a familiar object.
Pour a liquid into the beaker on a top-loading balance. Mass follows from m = d × V, and the volume is shown in every unit on the sheet.
Set a temperature in °C, °F or K. The other two scales update, and the beaker of water freezes, warms or boils at 1 atm.
Choose an element, a mass number and a charge. The model counts protons, neutrons and electrons with p = Z, n = A − Z and e⁻ = Z − C.
Pick a cation and an anion. Their charges cross over to become subscripts, the ratio is reduced, and the press reports the name, molar mass and solubility.
Covalent compounds of two nonmetals are named with Greek prefixes. Set the atom counts and watch the name assemble, including the dropped "mono" and the vowel that disappears before "oxide".
Type any formula, including brackets such as Ca(OH)2. The ledger adds the atomic masses into MW, then converts grams to moles with n = m / MW.
Read the curve the way the sheet describes: find the line, find the temperature, read the y-axis. Below are calculators for percent concentration, molarity and dilution.
Build a main chain, choose the bond, and attach substituents. The loom draws the skeleton, numbers it from the end that gives the lowest locants, and writes the IUPAC name.
Answer the identifier's questions to classify a molecule from its structure, or select a card. The C=O questions follow the red tricks from the sheet.
Same molecular formula, different arrangement. Toggle each pair to see what changes.