This simulation can be used successfully in homework, lectures, in-class activities and lab activities. Follow the directions on the website to run the simulation and explore the activities of balancing the chemical equation.
Suggested Assessment Questions
- Balance the following equation:
____ N2 + ____ H2 ⇒ ____ NH3
- Draw the particle view of the balanced equation.
_______________________ ⇒ ___________________________
- Describe the purpose of the balance scales and bar charts in the simulation.
- In order for a chemical equation to be properly balanced, what must be true?
- Balance the two examples:
Separation of water
___ H2O ⇒___ H2 + ___ O2
Combustion of methane
___ CH4 + ___ O2 ⇒ ___ CO2 + ___ H2O
- The number placed in front of a formula is called a coefficient. The small number within a chemical formula is called a subscript. Why do we adjust coefficients when balancing chemical equations and not subscripts?
The answer key is provided in the attachments section.
Source and Access Information
Name of Author/Source: PhET
District/Organization of Contributor(s): Leon
Is this Resource freely Available? Yes
Access Privileges: Public
* Please note that examples of resources are not intended as complete curriculum.