12 A YEAR IN SCIENCE 



Questions 



1. How do you account for the fact that you can 

 place a teaspooiiful or more of sugar in a glass ap- 

 parently already full of water, without causing the 

 water to overflow the sides of the glass? 



2. What does question 1 show T concerning the 

 structure of a liquid? 



3. What do you conclude concerning the structure 

 of a gas after a liter of oxygen has been squeezed into 

 half a liter space? 



4. What does the experiment of the ball and the 

 ring tell .you about the structure of a solid ? 



5. What is a molecule? 



6. What do you mean by inter-molecular space? 



7. Are molecules of different substances of the 

 same size? 



8. Are the inter-molecular spaces in different sub- 

 stances of the same size? 



9. Are the molecules in steam, water, and ice of 

 the same size? 



10. Are the inter-molecular spaces in steam, water, 

 and ice of the same size? 



11. What is the effect of an increase of temperature 

 on the molecules of a substance? Of a decrease in 

 temperature ? 



12. What is the effect of an increase of temperature 

 on the inter-molecular spaces of a substance? Of a 

 decrease of temperature? 



