Question

energy changes in chemical reactions: tutorial
· you will determine the meanings of symbols and key terms in a science text.
· you will analyze and interpret data to determine similarities and differences in findings.
directions
read the instructions for this self - checked activity. type in your response to each question, and check your answers. at the end of the activity, write a brief evaluation of your work.
activity
study the balanced chemical equations for the reactions of methane (ch4) with oxygen and hydrogen with oxygen. methane is the main component of fossil fuels such as natural gas.
ch4 + 2o2 → co2 + 2h2o + energy
2h2 + o2 → 2h2o + energy
part a
what product of the reaction of methane has an impact on the environment?

Explanation:

In the reaction of methane ($CH_4$) with oxygen ($O_2$): $CH_4 + 2O_2
ightarrow CO_2+2H_2O + energy$. Carbon - dioxide ($CO_2$) is a greenhouse gas. Increased levels of $CO_2$ in the atmosphere contribute to global warming and climate - change, which have far - reaching environmental impacts such as rising sea levels, changes in weather patterns, etc.

Answer:

Carbon dioxide ($CO_2$)