The burning of certain fuels results in two products, carbon dioxide, and water. Carlos and Javier are
each asked to draw a model of the gas mixture to show why carbon dioxide and water are different
substances. Carlos and Javier draw their models at different scales as shown below. Whose model is
drawn at a scale that better shows carbon dioxide and water to be different substances? Explain why
you chose this model.
Carlos' Model
Waterpartie
Carbon dioxide
particle
Javier's Model
Oxygen atom
Hydrogen atom
Carbon atom