Bps science

posted by .

When electricity is passed through water hydrogen and Oxygen gas are found change. A change in the state of matter occurs. Is this a chemical or physical change.

  • Bps science -

    This is a physical change. All changes of state are physical changes.

  • @ Mike---Bps science -

    Baloney.
    You are right that changes of state are physical changes; however, this is the decomposition of H2O into two different substances and that is a chemical change.
    Water changed from a liquid to a vapor is a change of state and a physical change but the water liquid is H2O and the water vapor is H2O. In the problem, the electrolysis of water changes the H2O to H2 and O2 and the fact that you have changed a liquid to two gases is irrelevant.

  • Bps science -

    Yes it's right after electrolysis hydrogen and oxygen become separate and everybody will call it as a physicalchange but it's wrong when it's vaporised hydrogen becomes H2 oxygen becomes O2 it can't be formed as water again so it's a chemical change

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Changes in Matter

    Which of the following are examples of a physical change?
  2. Chem Lab

    Am I right? Classify the following properties of sodium metal as physical or chemical: •Silver metallic color—physical property •Turns gray in air—physical property •Melts at 98º C-melting point is physical property •Reacts
  3. science

    Will you please check a few more? Physical change, chemical change or both kinds of change?
  4. Science

    1) Which of the following is a chemical change?
  5. Comprehensive Science

    When an electric current is passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183°C and the other has a boiling point of -253°C. Has a physical change or a chemical change …
  6. Science

    Multiple Choice 1. Which of the following is a chemical change?
  7. Science

    Plz correct me if I'm wrong!! 1) Which of the following is a chemical change?
  8. Science

    1.)Which of the following are chemical changes?
  9. Science

    when a current is passed through water during the process of electrolysis,two gases are formed. One gas has formed has a boiling point of -256 degrees celsius.Has a chemical or physical change occurred?
  10. Chemistry

    When an electric current passes through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183 C and the other has a boiling point of -253 C. Has a physical change or chemical change occurred?

More Similar Questions