decomposition of water by electricity is a physical change or chemical change
Answers
Answer:
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. For instance, when an electric current is passed through water (H2O), it can be broken down into hydrogen and oxygen or H2 + O2. In this example, water is broken down into its two elements.
Explanation:
Physical Change Definition
First, let’s talk about physical changes in chemistry. A physical change occurs when a substance or object changes its appearance, phase, or is used in a mixture. More importantly, a physical change does not change the molecular structure of a substance. And you can reverse a physical change to recover all of the original matter, even if it doesn’t look exactly the same. In other words, in physical changes, the molecules from before and after the change stay the same!
Chemical Change Definition
In contrast, a chemical change takes place when the original substance’s of molecules are taken apart and put back together into new combinations that are different from the original combinations. Furthermore, the original matter cannot be recovered. And unlike physical changes, these changes usually use a lot more energy, such as heat and light, because the molecular bonds need to be broken in order to rearrange them