Question

which statement is true about the chemical reaction for photosynthesis in which carbon dioxide and water react to form glucose and oxygen? get help here the number of carbon atoms in the reactants and products are equal. the process of photosynthesis is a physical change. glucose and oxygen have a higher total mass than carbon dioxide and water. light energy destroys some of the matter during the reaction. check answer remaining attempts: 3

Explanation:

1. Analyze the first option: According to the law of conservation of mass in chemical reactions, the number of each type of atom in reactants and products is equal. In photosynthesis, the reaction is \(6CO_2 + 6H_2O \xrightarrow{light} C_6H_{12}O_6 + 6O_2\), so carbon atoms are conserved.
2. Analyze the second option: Photosynthesis involves the formation of new substances (glucose and oxygen from \(CO_2\) and \(H_2O\)), so it is a chemical change, not physical.
3. Analyze the third option: By the law of conservation of mass, the total mass of reactants (\(CO_2\) and \(H_2O\)) equals the total mass of products (glucose and \(O_2\)).
4. Analyze the fourth option: The law of conservation of mass states matter is neither created nor destroyed, so light energy doesn't destroy matter.

Answer:

The number of carbon atoms in the reactants and products are equal.