Question

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Explanation:

1. Reactants: Carbon dioxide is a compound of carbon and oxygen, formula $\text{CO}_2$. Products: Oxygen is diatomic, formula $\text{O}_2$; glucose is a sugar with formula $\text{C}_6\text{H}_{12}\text{O}_6$.

5a. Reactants are water ($\text{H}_2\text{O}$) and carbon dioxide ($\text{CO}_2$), so elements are hydrogen (H), oxygen (O), carbon (C).
5b. Products are oxygen ($\text{O}_2$) and glucose ($\text{C}_6\text{H}_{12}\text{O}_6$), so elements are hydrogen (H), oxygen (O), carbon (C).
5c. Chemical reactions rearrange atoms into new substances; elements are conserved.

Answer:

1. Reactants: Carbon Dioxide $\text{CO}_2$

Products: Oxygen $\text{O}_2$, Glucose $\text{C}_6\text{H}_{12}\text{O}_6$
5a. Hydrogen, oxygen, carbon
5b. Hydrogen, oxygen, carbon
5c. Atoms were rearranged into new substances (chemical reaction), conserving element types.