(answers are at the bottom)
1. In the following chemical equation: 2H2 + O2 = 2H2O what do we call the atoms on the left side of the equation?
2. What do we call the atoms on the right side of the equation listed in above question?
3. The number 2 in O2 tells us what?
4. The number 2 in 2H tells us what?
5. What exactly does 2H2 tell us?
3. That there are two oxygen atoms and that they are bonded to each other.
4. That there are two hydrogen atoms but that they are NOT bonded to each other.
5. The small subscript 2 on the right tells us that there are two bonded hydrogen atoms. The large 2 in front of the H2 tells us that there are two hydrogen molecules ( H2 is a molecule because there are two atoms bonded together).
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