Answer:
B: heat is given off C:
Step-by-step explanation:
Physical Change
The changes that occur only due to change in shape or physical properties but their chemical or internal composition remain unchanged.
These changes were reversible.
They have same chemical property.
These changes can be observed with naked eye.
Example :
Water converting to Ice
Water converting to gas
Chemical change:
The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.
These changes are irreversible
These changes occur due to chemical reactions
These may not be observed with naked eye
Example:
Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood
So in given data the heat is given off indicate the chemical change while others
Solid melts
Substance dissolve
Substance change shapes are physical changes because no new product is obtained there is no indication of chemical reaction.