Answer:
B. Conductivity.
Explanation:
Conductivity is the quantity of heat passing per second through a slab of unit cross-sectional area when the temperature gradient between the two faces is unity when put in heat.
Popping noise,difrent odor,fizzing and stuff like thwy
Answer
Q=4479.8 cal
Procedure
To solve the problem you will need to use the specific heat formula

Where;
Q=heat energy
m=mass
c=specific heat capacity
ΔT=change in temperature
Assuming that the heat released from the cracker of unknown material is equal to the heat absorbed by the water, then we can use the c and m for water in our calculations.

Substituting the values in our equation we have

Finally, transform the J to cal