GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which substance would take a long time to cool off?
A
iron
B
lead
C
copper
D
water
Explanation: 

Detailed explanation-1: -It takes less energy to change the temperature of land compared to water. This means that land heats and cools more quickly than water and this difference affects the climate of different areas on Earth.

Detailed explanation-2: -Water will take the longest, and iron will take the shortest time to heat, as well as to cool.

Detailed explanation-3: -As shown by the Specific Heat chart, water would heat up and cool down the slowest, experiencing the smallest change in temperature. Lead has the lowest specific heat and would undergo the greatest change in temperature. 4. 1 All of the given substances have the same mass and are at the same initial temperature.

Detailed explanation-4: -Water heats up or cools down slower than many other common substances because of its high specific heat capacity. In this context, ‘heating up’ means to increase in temperature by a specific amount over a given unit of time. To ‘cool down’, the water must decrease by a certain temperature in a given amount of time.

There is 1 question to complete.