Question

You are given 10g samples of each of the materials listed. Each material is heated for the same period of time. Rank the materials in terms of temperature change observed from least change to most change.
Specific Heat
Material Specific Heat (J/kg K)
Aluminum 900
Copper 390
Brass 380
Silver 230
Platinum 130
Water 4186

Answer 1

Answer : The order of temperature change observed from least change to most change is:

Water < Aluminum < Copper < Brass < Silver < Platinum

Explanation :

Specific heat capacity : It is defined as the amount of heat absorbed by one gram of a substance to raise its temperature by one degree Celsius.

Formula used for specific heat capacity :

$C=\frac{q}{m\times \Delta T}$

where,

C = specific heat capacity

m = mass of a substance

q = heat required

$\Delta T$ = change in temperature of substance

As per question, each material is heated for the same period of time that means amount of heat is same and mass of substance is also same. So, the change in temperature depends only on specific heat.

$C\propto \frac{1}{\Delta T}$

As, there is a inverse relation between the specific heat and temperature.

As, the more is the specific heat of substance, the less will be the temperature change and vice-versa.

The order of temperature change observed from least change to most change is:

Water < Aluminum < Copper < Brass < Silver < Platinum

Answer 2

Answer:

Temperature change observed in following material from least change to most change:

1. Water

2. Aluminium

3. Copper

4. Brass

5. Silver

6. Platinum

Explanation:

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

Higher the specific heat of a material, more the heat is required to change its temperature.

Thus the arrangement of materials in descending order of their specific heat gives us the list of materials with temperature change from least to most.