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Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns? O the shape of the coal changes O a new substance is produced O oxygen is present O coal is made up of more than one element 11 12 13 14 15 16 17 18 19 20

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns? O the shape of the coal changes O a new substance is produced O oxygen is present O coal is made up of more than one element 11 12 13 14 15 16 17 18 19 20

Introductory Chemistry: An Active Learning Approach
Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter12: Chemical Bonding
Section: Chapter Questions
Problem 7E
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Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns? O the shape of the coal changes O a new substance is produced O oxygen is present O coal is made up of more than one element 11 12 13 14 15 16 17 18 19 20 Support | Schoology Blog | PRIVACY POLICY | Terr
Transcribed Image Text:Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns? O the shape of the coal changes O a new substance is produced O oxygen is present O coal is made up of more than one element 11 12 13 14 15 16 17 18 19 20 Support | Schoology Blog | PRIVACY POLICY | Terr
Expert Solution
Step 1

When coal burn there is a chemical reaction takes place. It is a chemical reaction. It's best evidence is a new substance is produced. 

So correct answer is second one

2)A new substance is formed

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