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marta [7]
3 years ago
11

Which of the following represents a physical change?

Chemistry
1 answer:
vivado [14]3 years ago
8 0
A. phase changing.  Physical change is any change in matter that involves the substance going from one physical state to another, and phase change is most commonly used to describe transitions between solid, liquid and gaseous states of matter.
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1. CH4 + 2O2 = CO2 + 2H20                 B.

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<h3>
How to determine the appropriate products of reaction</h3>

To find the appropriate end products, use the following rules

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  • The oxygen ratio should be the same on both the product and reactant sides
  • The carbon ratio should be the same on both sides.

Thus for equation;

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2. 2CH2H6 + 2O2 = 4CO2 + 6H20      A  

3. C2H8 + 502 = 2CO2 + 4H20            C  

Learn more about balancing equations here:

brainly.com/question/26694427

#SPJ1

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