I diagram below shows what happens to water when an electric current is applied. From this diagram we see that hydrogen gas and oxygen gas are produced in this process which of the following correctly classifies this process. 1. This is a physical change because the chemical make up of the substance does not change.

2. This is a chemical change because the chemical make up of the substance does not change.

3. This is a physical change because new substances are formed with new properties.

4. This is a chemical change because new substances are formed with new properties.