Answer:
1. relative time
2.absolute time
Explanation:
Time that is measured in definite periods such as minutes, days, and years is called
a. Relative time.
b. absolute time.
2Mg+O2=2MgO
balanced equation
hope it helps.
Exothermic
I think it is exothermic because heat is being released
use a mask
thats all I can help
Hydrogen ions
Explanation: acids will produce hydrogen ions, I asked my teacher. Please tell me if we are wrong.