IPAC Midterm exam with Questions and Correct Answers 2025.

IPAC Midterm exam with Questions and
Correct Answers 2025




experiment ,is ,designed ,to ,determine ,if ,the ,amount ,of ,sugar ,in ,a ,drink ,affects ,the
,likelihood ,that ,bees ,will ,be ,attracted ,to ,it. ,Sample ,A ,is ,100 ,mL ,of ,pure ,water. ,Sample
,B ,is ,100 ,mL ,of ,water ,with ,1 ,gram ,of ,sugar ,dissolved ,in ,it. ,Sample ,C ,is ,100 ,mL ,of
,water ,with ,2 ,grams ,of ,sugar ,dissolved ,in ,it.


All ,samples ,are ,placed ,on ,a ,picnic ,table. ,One ,observer ,is ,assigned ,to ,each ,drink.
,The ,observers ,count ,the ,number ,of ,bees ,that ,visit ,the ,drink ,during ,a ,15-minute
,interval.


Which ,of ,the ,following ,is ,the ,best ,hypothesis ,for ,this ,experiment? ,- ,CORRECT
,ANSWER-If ,the ,amount ,of ,sugar ,in ,a ,drink ,increases, ,then ,the ,number ,of ,bees ,it
,attracts ,will ,increase.


In ,the ,above ,experiment, ,which ,factor ,is ,the ,independent ,variable? ,- ,CORRECT
,ANSWER-the ,amount ,of ,sugar ,in ,the ,sample


Make ,the ,following ,conversion.

0.080 ,mL ,= ,_____ ,L ,- ,CORRECT ,ANSWER-0.000080 ,L

Use ,the ,ruler ,to ,determine ,the ,length ,of ,the ,line ,measured ,to ,the ,correct ,degree ,of
,precision. ,- ,CORRECT ,ANSWER-13.25 ,cm


What ,is ,the ,volume ,of ,the ,fluid ,in ,this ,graduated ,cylinder ,measured ,to ,the ,correct
,degree ,of ,precision? ,- ,CORRECT ,ANSWER-41.5 ,mL


Determine ,the ,mass ,of ,the ,object ,below ,to ,the ,correct ,degree ,of ,precision. ,-
,CORRECT ,ANSWER-105.65 ,g


Which ,of ,the ,following ,scientists ,used ,atomic ,spectra ,to ,develop ,a ,model ,of ,the
,atom? ,- ,CORRECT ,ANSWER-Niels ,Bohr


Find ,similar ,atoms ,via ,a ,periodic ,table ,of ,elements ,- ,CORRECT ,ANSWER-Oxygen
,(8), ,selenium(34), ,tellurium(52)