Question

When some solid materials are heated it absorbs heat the heat absorbed or added to the material count the materials of saint is formed blank to blank the materials also change its blank blank and five blank when heated with some materials are cooled it remove or release heat the heat removed or released from the materials caused the matter riyals to change it from its form blank to blank the material also change its blank blank and blank when cold

Answer 1

Answer:

All solids absorb heat as they melt to become liquids. The gain of heat in this endothermic process goes into changing the state rather than changing the temperature. The molar heat of fusion (Delta H_{text{fus}}) of a substance is the heat absorbed by one mole of that substance as it is converted from a solid to a liquid. Since the melting of any substance absorbs heat, it follows that the freezing of any substance releases heat. The molar heat of solidification (Delta H_{text{solid}}) of a substance is the heat released by one mole of that substance as it is converted from a liquid to a solid. Since fusion and solidification of a given substance are the exact opposite processes, the numerical value of the molar heat of fusion is the same as the numerical value of the molar heat of solidification, but opposite in sign. In other words, Delta H_{text{fus}} =- Delta H_{text{solid}} . The Figure below shows all of the possible changes of state along with the direction of heat flow during each process.

Answer 2

The question mentioned in the above text is When some solid materials are heated, it absorbed heat. The heat absorbed/added to the material caused the material to change its form from 1.______ to 2._______. The materials also changed its 3.____, 4.______ and 5._____ when heated.  

When some materials are cooled, it removed/released heat. The heat removed/released from the materials caused the materials to change its form from 6._____ to 7.______. The materials also changed its 8._____,9.______ and 10._______ when cooled.  

The answers to the blanks are:

1. Solid
2. Liquid
3. Shape
4. Size  
5. Texture  
6. Liquid
7. Solid  
8. Shape
9. Size  
10. Texture  

• When  solids are heated, the molecules gain energy and move away from each other and during this movement, the phase of the material changes  from solid state to liquid state. This process is called melting.

• When a liquid is cooled, the molecules come closer, reduce the surface area and become compact, the phase of the material changes from liquid to solid state. This process is called freezing or solidification.