EVERYDAY SCIENCE

SCIENCE

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When a pure ____ is heated its temperature rises unit it is at its melting point an additional quantity of heat causes it to melt.
A
Metal
B
Mineral
C
Solid
D
Gas
Explanation: 

Detailed explanation-1: -As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change. When all the solid has melted, additional heat will raise the temperature of the liquid.

Detailed explanation-2: -The temperature at which the substance changes its state from solid to liquid is the melting point of that substance. For example, ice melts at 0oC, hence melting point of ice is 0oC.

Detailed explanation-3: -The melting point of a substance is the temperature at which the substance changes from a solid to a liquid. For a pure substance, melting occurs at a single temperature. Unless specifically stated otherwise, melting points reported in the literature have been measured under an applied pressure of 1 atm of air.

Detailed explanation-4: -HEAT CAPACITY AND SPECIFIC HEAT The HEAT CAPACITY is the amount of heat required to raise the temperature of an object or substance 1oC. IT IS DEPENDENT UPON THE MASS OF THE OBJECT. The SPECIFIC HEAT is similar but defined for a specific amount of mass.

There is 1 question to complete.