Label each as either physical or chemical change. a. corrosion of aluminum metal by hydrochloric acid
b. melting wax
c. pulverizing an aspirin tablet
d. digesting a Three Musketeersbar
e. explosion of nitroglycerin
f. a burning match
g. metal warming up, due to the burning match
h. water vapor condensing on the metal
i. the metal oxidizes, becoming dull and brittle
j. salt being dissolved by water

corrosion of aluminum metal by hydrochloric acid - chemical change

melting wax - physical change

pulverizing an aspirin tablet - physical change

digesting a Three Musketeersbar - chemical change

explosion of nitroglycerin - chemical change

a burning match - chemical change

metal warming up, due to the burning match - physical change

water vapor condensing on the metal - physical change

the metal oxidizes, becoming dull and brittle - chemical change

salt being dissolved by water - physical change

Explanation:

A chemical change is one in which a new substance is produced and it is not easily reversible. A chemical change always goes with absorption or evolution of heat.

On the other hand, a physical change is one in which no new substance is formed and it is easily reversible.

The processes mentioned in the question were classified into physical and chemical changes as we can see in the answer section.