Question

Sugar is used for energy by almost all organisms on Earth. In cells, sugar combines with oxygen and forms carbon dioxide and water.

When sugar combines with oxygen to form these products, is it a physical or a chemical change, and why?

1.)a physical change, because oxygen is involved in the change
.)a physical change, because the atoms that make up sugar rearrange to form the products
3.)a chemical change, because oxygen is involved in the change
4.)a chemical change, because the atoms that make up sugar rearrange to form the products

Answer 1

Step-by-step explanation:

When sugar combines with oxygen to form carbon dioxide and water, it is a chemical reaction. The carbon and hydrogen molecules in sugar re-arrange to join with oxygen to form carbon dioxide and water.

So the answer is 4.)a chemical change, because the atoms that make up sugar rearrange to form the products.

Answer 2

Step-by-step explanation:

chemical change as sugar reacts w O2 to form CO2 n water - reason is not cuz' of O2 but the re-arrangement to form CO2.

ans is 4.)a chemical change, because the atoms that make up sugar rearrange to form the products