CHEMICAL VS PHYSICAL CHANGE Please help with both for brainliest

Write a word in each blank to complete the sentence.

C) chemical changes always change the way are stuck together in molecules.

D) add heat causes a material to change. If removing heat causes the material to return to the way is was, the change was probably a change.

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers