A. Objective: Determine the chemical formula of magnesium oxide (MgXOY) by experiment using the mole concept.
B. The Experiment: Run a reaction between magnesium (Mg) and oxygen (O2) by heating magnesium in a crucible with the cover partially ajar. Use a 20 cm. strip for trial 1 and a 25 cm strip for trial 2. As [...]

Objective: To determine the number of oxygen atoms in a potassium chlorate molecule.
Potassium chlorate is a compound composed of potassium (K), chlorine (Cl), and oxygen (O). It melts at 368°C and decomposes at 400°C into the solid compound, potassium chloride (KCl), with molecular oxygen (O2) driven off.
potassium chlorate          potassium chloride + oxygen
KClOX =>             [...]

Use the following design when writing formal lab reports. Although many lab reports will not be formal ones, you are expected to know the details of this design and to understand the logical sequence of ideas within it.

Title
A concise statement of the problem

Introduction
Optional in chemistry and physics; generally required in biology: A statement of objectives [...]