Write answers the following questions.
(a) What is meant by the melting point of substance?
(b) What is one calorie of heat?
(c) Where is a calorimeter used?
(d) What is a special characteristic of mercury?
Write answers the following questions.
(a) What is meant by the melting point of substance?
(b) What is one calorie of heat?
(c) Where is a calorimeter used?
(d) What is a special characteristic of mercury?
(a) The temperature at which a substance starts melting and becomes liquid at atmospheric pressure is known as its melting point. The melting point varies amongst substances.
(b) One calorie of heat is the amount of heat required to raise the temperature of 1 kg of water by 10C (from 14.50C to 15.50C).
(c) A calorimeter is used to find the specific heat of a substance.
(d) A special characteristic of mercury is that mercury is the only metal that exists in liquid form. This means that when heat is applied to it, it expands or contracts regularly and uniformly.
(a) The temperature at which a substance starts melting and becomes liquid at atmospheric pressure is known as its melting point. The melting point varies amongst substances.
(b) One calorie of heat is the amount of heat required to raise the temperature of 1 kg of water by 10C (from 14.50C to 15.50C).
(c) A calorimeter is used to find the specific heat of a substance.
(d) A special characteristic of mercury is that mercury is the only metal that exists in liquid form. This means that when heat is applied to it, it expands or contracts regularly and uniformly.
