Question

complete the activity to practice what you have learned. 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 a chemical reaction, the number of each type of atom in reactants and products is equal. In photosynthesis, the reaction is \(6CO_2 + 6H_2O \xrightarrow{\text{light energy}} C_6H_{12}O_6 + 6O_2\). The number of carbon atoms in \(CO_2\) (reactant) and \(C_6H_{12}O_6\) (product) follows the conservation, so the number of carbon atoms in reactants and products are equal.
2. Analyze the second option: Photosynthesis involves the formation of new substances (glucose and oxygen) from carbon dioxide and water, so it is a chemical change, not a physical change.
3. Analyze the third option: By the law of conservation of mass, the total mass of reactants (carbon dioxide and water) is equal to the total mass of products (glucose and oxygen), so this statement is false.
4. Analyze the fourth option: The law of conservation of mass states that matter is neither created nor destroyed in a chemical reaction. Light energy is used to drive the reaction, not to destroy matter.

Answer:

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