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2 votes
Which is an example of substances reacting chemically?

a. Paper being cut into small pieces
b. Chocolate melting in a pan
c. Flour and sugar mixed together in a bowl
d. Iron and oxygen forming rust

User Nedra
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4.2k points

2 Answers

3 votes

Answer:

D

Step-by-step explanation:

Iron and Oxygen forming rust is a chemical reaction. It creates something new and it changes its chemical formula. Both signs of a Chemical Reaction

User Greatmajestics
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3.8k points
5 votes

Answer:

D

Step-by-step explanation:

Iron and oxygen forming rust.

User Animesh Jena
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4.2k points