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Heat and Temperature                        

Heat is a measure of change, never a property possessed by an object or system. Therefore, it is classified as a process variable. Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius (°C), Kelvin(K), Fahrenheit (°F), or Rankine (R).


According to the kinetic theory of particles, matter consists of tiny particles called…..
a) atoms                                               

b) molecules
c) sub-atomic particles

d) ions

a

According to the kinetic theory of particles, atoms combine together to form…..
a) radical                                              

b) molecules
c) sub-atomic particles

d) ions   

b

Explanation:The kinetic theory of matter (particle theory) says that all matter consists of many, very small particles which are constantly moving or in a continual state of motion. The degree to which the particles move is determined by the amount of energy they have and their relationship to other particles


How many states of matter present?
a) two    

b) three                 

c) four   

d) five

b

Explanation:1. Solid, 2. Liquid and 3. Gas



According to the kinetic theory of particles, particles which of the following state/s of matter only vibrate about their mean position?
a) solids

b) liquids               

c) gases 

d) all

a

According to the kinetic theory of particles, particles which of the following state/s of matter can flow?
a) solids

b) liquids 

c) gases

d) both b and c

d