A liquid is heated in lab using hot plate the graph temperature vs time is shown below

answer using letter A, B, C, D FROM THE ABOVE GRAPH

1) WHERE IS THE RATE OF CHANGE ZERO?

2) WHERE IS THE RATE OF CHANGE CHANGING?

3) WHERE IS THE RATE OF CHANGE POSITIVE?

4) WHERE IS THE RATE OF CHANGE GREATEST?

5) CALCULATE RATE OF CHANGE FOR SECTION A, INCLUDING UNITS?

MY ANSWER FOR

1) C

2) B

3) A

4) D

5) NOT SURE HOW TO SOLVE

PLEASE CHECK MY ANSWERS AND HELP ME

THANKS