28 LABORATOEY MANUAL 



CHAPTER III 

 EFFECT OF HEAT ON MATTER 



Exercise 9. Effect of Heat on Solids. 

 Object: To determine the effect of the change of 

 temperature on the volume of a solid. 



Brass ball 

 Brass ring 

 Bunsen burner 



Apparatus 



Compound bar 

 Nail punch 

 Screw nut 



Directions : A. Try the fit of the ring over the ball. 

 Heat the ball. Will the ball now pass through the 



ring? Heat the ring. Will 

 the ball now pass through 

 the ring? Cool the ring 

 by running tap water over 

 it. Will the ball pass 

 through the ring now ? In 

 the same manner cool the 

 ball and try the fit again. 

 From these observations 

 what is the effect of an 

 increase of temperature 

 upon the volume of a 

 solid? What is the effect 

 of a decrease of tempera- 

 ture? 



B. Adjust the nut on 

 Fig. 10. the punch. Mark the point 



