Mels3305 Mels3305

15-05-2020
Chemistry

contestada

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? Select one: A new substance is produced. Coal is made up of more than one element The shape of the coal changes. Oxygen is present.

Respuesta :

oliviamyprecious oliviamyprecious

10-11-2020

Answer:

a new substance is produced

Explanation:

i just took my test and got this question right

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mahima6824soni mahima6824soni

03-08-2022

The best evidence that a chemical reaction occurs when coal burns is a new substance is produced. The correct option is A.

What is coal?

Coal is a carbon containing fossil fuel, which is formed when the organic matter is decomposed inside the earth with heat and pressure by the earth crust. It is the most used fossil fuel.

Carbon dioxide is a gas produce when these fossils fuel burned. It is a green house gas and increase the warmth of the earth when produced. It is taken by plants to make their food.

When coal burns, it produces carbon dioxide which is a gas and coal is a solid, so here the chemical reaction is happening which is producing a new substance.

Thus, the correct option is A. A new substance is produced.

To learn more about coal, refer to the link:

https://brainly.com/question/26411066

#SPJ6

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