In a science lab, burning steel wool creates only iron oxide. What must be true? A
The reaction of burning steel wool can sometimes create carbon monoxide.
B
The reaction of burning steel wool will sometimes create iron oxide and water.
с
The reaction of burning steel wool is not endothermic or exothermic.
D
The reaction of burning steel wool always creates iron oxide.

D

Explanation:

The reaction of burning steel wool always creates iron oxide.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

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explanation: