On the expression of chemical characters in grade three of junior high school [a generates substance C and D through b] is written as a + B - > C + D [b transforms a into substance C, D] is written as a - > (B is written above the arrow) C + D Is it?

On the expression of chemical characters in grade three of junior high school [a generates substance C and D through b] is written as a + B - > C + D [b transforms a into substance C, D] is written as a - > (B is written above the arrow) C + D Is it?

If the reactants are a and B, and the products are C and D, you can write a + B --- C + D. if B does not participate in the reaction, you can write a - > (B is written above the arrow) C + D
I'm a chemistry teacher. I just talked about this part