Under the microscope, the students compared several chemical formulae drawn on the board to check for consistency.

During the emergency drill, the technicians inspected the chemical horns to ensure they would alert workers to leaks.

Understanding chemical laws helps students predict reaction outcomes and design safer experiments.

After the accident, several chemical plants were temporarily shut down for safety inspections.

Workers must be trained to recognize chemical hazards before entering the laboratory.

Students observed several chemical changes during the volcano demonstration.

The team calibrated multiple chemical clocks to determine when the sediment layers were deposited.

Authorities discovered several chemical bombs stored in the abandoned factory and called in a hazardous materials team.

Researchers compared the chemical lithospheres of nearby exoplanets to understand their surface evolution.

The textbook's appendix lists chemical formulas for common compounds alongside their molar masses.