I need help with both parts, ill give brainliest and 30 points Part A: What changes does sugar undergo when heated in a spoon over the flame?

Select one:
A. A physical change, then a chemical change
B. Two physical changes
C. Two chemical changes
D. A chemical change, then a physical change

Part B: What evidence from the experiment and data table best supports your answer to Part A? Use information from the stimulus material and your knowledge of science to support your answer. In your answer, be sure to:

Desribe the evidence that supports your answer to Part A.
Provide your reasoning why that evidence supports your answer to Part A.

part a=A. A physical change, then a chemical change

part b:evidence

without physical change any sorts of chemical change do not take place.

for example: when sugar is heated on spoon the physical change takes place in sugar .sugar starts to form liquid from solid.

try answer.com that works for me

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml