Question 1

Question

Study the models shown in the picture. The models were all made using the same model kit. The methane model and the oxygen model are both complete and correct. In the carbon dioxide model, one atom is incorrectly represented with a blue sphere.

a. Think about the models shown above. What colors are used to represent the different elements?

(3 points)
The white spheres represent
atoms. The red spheres represent
atoms. The grey spheres represent
atoms.
Question 2

Keep thinking about the models shown above, and consider which elements are represented by which colors.

b. What color should the blue atom actually be?

(1 point)
Responses

white
white

black
black

red
red

grey
grey
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Answer 1

Based on your description of the models and the colors used:

Question 1:
The white spheres represent hydrogen atoms.
The red spheres represent oxygen atoms.
The grey spheres represent carbon atoms.

Question 2:
The color that the blue atom should actually be is grey (since the blue atom incorrectly represented in the carbon dioxide model should represent carbon).