Featured in PASCO’s Chemistry through Inquiry Teacher Guide

Chemistry through Inquiry Teacher Guide

(PS-2871C)

Features over 25 inquiry based labs covering the fundamental concepts of lab skills, structure & properties of matter, chemical reactions and more.

Significant Figures

Lab Summary

Determine the correct number of significant figures to include when reporting a measurement or a calculated value based upon measurements.

Theory

Determine the correct number of significant figures to include when reporting a measurement or a calculated value based upon measurements. Through this investigation, students:

  • Explain the difference between precision and accuracy.
  • Rank the precision of different instruments.
  • Record the values of length and volume measurements to the proper number of significant figures.
  • Record the result of a calculation utilizing measurements to the proper number of significant figures.

Method

Students conduct the following procedures:

  • Use meter sticks with various scales to record the dimensions of different objects to the proper number of significant figures.
  • Use recorded measurements to calculate volumes (multiplication and addition) and report the results with the correct number of significant figures.

Sensors / Equipment Used:

Significant Figures Set - Single

(ME-9850)

The series of activities included in the Significant Figure Set emphasizes the connection between measurements and significant figures. Single set.

Materials Used:

Graduated cylinder, 10-mL
Graduated cylinder, 100-mL
Beaker, 100-m
Irregular-shaped object 
Regular-shaped object 

The Associated Bundle:

Chemistry Standard Sensor Bundle

(PS-2927C)

Contains the sensors and probes needed to perform all 17 experiments in the Advanced Chemistry Teacher Guide and all 25 labs in the Chemistry through Inquiry Guide.

Interface Required

This experiment may require software and an interface for data collection.