K.C.S.E Physics Q & A - MODEL 2001PP1QN06&7

K.C.S.E Physics Q & A - MODEL 2001PP1QN06&7

​Fig. 5 shows a flask fitted with a glass tube dipped into a beaker containing water at room temperature. The cork fixing the glass tube to the flask is airtight.

​Use the information and the figure to answer questions 6 and 7.
 State what is observed when ice- cold water is poured on the flask.
 Give a reason for the observation in question 6.

answers

• ​When rises up the tube into the flask or water is sucked into the tube or bubbles are seen momentally.
• Cold water causes air in the flask to contract // reduces pressure inside flask or when cold water is poured it causes a decrease in volume of air the flask or pressure increases in the flask // volume of the flask decreases.