Chemistry
TI-Nspire™ provides versatile tools for studying chemistry. A central application is TI-Nspire™ Notes, where you can write explanations, perform calculations in the Math Box, and create chemical equations in the Chem Box.
In the Chem Box, reaction equations can be written clearly, while the Math Box is used for stoichiometric and equilibrium calculations.
The TI-Nspire™ Chemistry Drawing Widget can be used, for example, to draw structural formulas and illustrate laboratory reports.
Vernier DataQuest™ enables the analysis of measurement data, such as examining titration curves and determining the equivalence point.
Writing Chemical Equations in the Chem Box
Chemical equations are written in the Chem Box (Ctrl+E). The Chem Box automatically formats formulas (e.g., subscripts) and converts the equal sign into a reaction arrow. It attempts to recognize letter case, but the user must always verify uppercase and lowercase letters (e.g., CO vs Co), as the interpretation may change.
Stoichiometric Calculations Using Math and Chem Boxes
Stoichiometric calculations can be performed in a Math box. Write the expression in one box and the numerical calculation in another.
In a Chem box, you can write and balance the chemical equation. A Chem box cannot be inserted inside a Math box, but you can copy needed expressions from the equation into the Math box for further calculations.
If desired, you can use the automatic unit system. It is useful when different measurement units appear in the problem.
Analyzing Titration Data
The Vernier DataQuest™ application plots a graph of titration data, showing pH changes as a function of the volume of titrant added.
By right-clicking the graph and selecting the Interpolate and Tangent tools, you can find the slope of the tangent at the steepest point. This point corresponds to the equivalence point of the titration.