Which molecules show an appropriate number of bonds around each carbon atom?.

Draw Lewis structures for the following organic molecules: C2H3F, C3H6C4H8 In each there is one C = C bond, and the rest of the carbon atoms are joined by C - C  bonds.

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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