A) chemical - gas produced
took the test sorry for being a day late.
Chemical reaction, generally speaking. It's a vague definition, but it's easy to remember.
The best and most correct answer among the choices provided by your question is the first choice or letter A.
A ph of 7 contains only water.
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
Answer:
D and R are in the same period
Explanation:
remember groups are vertical and periods are horizontal!
Which type of radioactive decay produces particles with the most mass? Alpha.