Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

How do we come to know that a chemical reaction has taken place?

NCERT Class 10th Science Chapter 1 Chemical Reactions and Equations


There will be a change in the element's mass number(protons and neutrons).A change in the color of the compound and also the color inside the flask.A change in the number of electrons as well as the energy required to change it's state.Often the presence of bubbles can also be used to identify that a reaction has taken place.Please mark as brainliest answer!
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts