Question

c₆h₁₂o₆ + 6o₂ → 6co₂ + 6h₂o + energy
which statement explains how the chemical equation for cellular respiration demonstrates conservation of matter?
the number of glucose atoms is the same on both sides of the equation
the number of carbon, hydrogen, and oxygen atoms is the same in the reactants and the products.
glucose and oxygen change to carbon dioxide and water in the reaction.
hydrogen and oxygen atoms are rearranged in the reaction.
which statement best explains how energy is transferred in cellular respiration?
chemical energy from glucose is stored by individual cells with the help of oxygen during cellular respiration. the chemical energy is then
released in the form of light and heat.
chemical energy from glucose and oxygen is stored in cells during the last stage of cellular respiration. the chemical energy is released
all at once in the form of atp, which is then used up by the cell.
chemical energy from glucose is released during cellular respiration. after glucose reacts with oxygen, the heat energy is stored by
individual cells over a series of steps
chemical energy from glucose is released slowly and over a series of steps when it reacts with oxygen. the chemical energy released is
used to form atp, which is then used to power biochemical processes.

Explanation:

The law of conservation of matter states that matter is neither created nor destroyed in a chemical reaction. In the cellular respiration equation \(C_6H_{12}O_6+6O_2
ightarrow6CO_2 + 6H_2O+Energy\), the number of glucose atoms (carbon, hydrogen, and oxygen) is the same on both sides of the equation. This shows that matter (atoms) is conserved.

• The option "The number of carbon, hydrogen, and oxygen atoms is the same in the reactants and the products" is correct because it directly relates to the conservation of matter principle.
• "Glucose and oxygen change to carbon dioxide and water in the reaction" only describes the reaction, not conservation.
• "Hydrogen and oxygen atoms are rearranged in the reaction" focuses on rearrangement, not conservation.
• "Chemical energy from glucose is stored by individual cells with the help of oxygen during cellular respiration. The chemical energy is then released in the form of light and heat" is about energy, not matter conservation.
• "Chemical energy from glucose and oxygen is stored in cells during the last stage of cellular respiration. The chemical energy is released all at once in the form of ATP, which is then used up by the cell" is about energy storage and release, not matter.
• "Chemical energy from glucose is released during cellular respiration. After glucose reacts with oxygen, the heat energy is stored by individual cells over a series of steps" is about energy (heat), not matter.
• "Chemical energy from glucose is released slowly and over a series of steps when it reacts with oxygen. The chemical energy released is used to form ATP, which is then used to power biochemical processes" is about energy (ATP), not matter.

Answer:

The number of carbon, hydrogen, and oxygen atoms is the same on both sides of the equation.