Final answer:
The substances heat up and cool down at different rates depending on their capacity to store heat, primarily influenced by their specific heat capacity.
Step-by-step explanation:
The substances heat up and cool down at different rates depending on their capacity to store heat, which is primarily influenced by their specific heat capacity. Specific heat capacity (cs) is the amount of energy needed to increase the temperature of 1 gram of a substance by 1°C. Different substances have different specific heat capacities, meaning they require different amounts of energy to change their temperature.