chem /
104
/ /
exam
/ //
1 practice questions with correct answers
// // // // //
semi //conductors //are //_______ //
A) //metalloids. //B) //halogens //C) //transition //elements.
D) //metals. //E) //nonmetals. //- //CORRECT //ANSWERS(S)✔✔metalloids
Which //of //the //following //is //an //element //and //a //molecule?
A) //Air //B) //He //C) //CO2 //D) //C //E) //O3 //- //CORRECT //ANSWERS(S)✔✔O3
The //ionization //energy //of //chlorine //is //lower //than //the //ionization //energy //of //________.
A) /
/calcium /
/B) //sodium //C) //hydrogen //D) //fluorine //E) //lithium //- //CORRECT //ANSWERS(S)✔✔fluorine
Choose //the //pure //substance //from //the //list //below.
A) //lemonade //B) //sea //water //C) //air //D) //sugar //E) //coffee //- //CORRECT //ANSWERS(S)✔✔sugar
the /
/recommended /
/adult /
/dos //of //elixophyllin, //a //drug //used //to //treat //asthma //is //6.00 //mg/kg //of //body //mass. //Calculate
//the //dose //in //milligrams //for //a //112 //lb //person //(1 //kg= //2.20 //lb)
, A) /
/305 /
/mg //B) //672 //mg //C) //670 //mg //D) //300 //mg //E) //1478 //mg //- //CORRECT //ANSWERS(S)✔✔305 //mg
Z //is //the //number //of //________ //in //an //atom.
A) //protons //and //electrons //B) //protons
D) //neutrons //E) //protons //and //neutrons
C) //electrons //- //CORRECT //ANSWERS(S)✔✔protons
how /
/many /
/kL //does //a //1.25x10^8 //cL //sample //contain? //- //CORRECT //ANSWERS(S)✔✔1.25x //10^3 //kL
Noble //gases //________.
A) //react //vigorously //with //water
C) //are //unreactive
E) //are //good //conductors //of //electricity
B) //are //liquids //at //room //temperature
D) //melt //at //high //temperatures //- //CORRECT //ANSWERS(S)✔✔unreactive
when /
/sugar /
/dissolves /
/in /
/water, /
/this /
/is /
/an //example //of //_________ //A) //change //of //shape //B) //change //of //element //C) //change //of //size
D) //physical //change //E) //chemical //change //- //CORRECT //ANSWERS(S)✔✔physical //change
104
/ /
exam
/ //
1 practice questions with correct answers
// // // // //
semi //conductors //are //_______ //
A) //metalloids. //B) //halogens //C) //transition //elements.
D) //metals. //E) //nonmetals. //- //CORRECT //ANSWERS(S)✔✔metalloids
Which //of //the //following //is //an //element //and //a //molecule?
A) //Air //B) //He //C) //CO2 //D) //C //E) //O3 //- //CORRECT //ANSWERS(S)✔✔O3
The //ionization //energy //of //chlorine //is //lower //than //the //ionization //energy //of //________.
A) /
/calcium /
/B) //sodium //C) //hydrogen //D) //fluorine //E) //lithium //- //CORRECT //ANSWERS(S)✔✔fluorine
Choose //the //pure //substance //from //the //list //below.
A) //lemonade //B) //sea //water //C) //air //D) //sugar //E) //coffee //- //CORRECT //ANSWERS(S)✔✔sugar
the /
/recommended /
/adult /
/dos //of //elixophyllin, //a //drug //used //to //treat //asthma //is //6.00 //mg/kg //of //body //mass. //Calculate
//the //dose //in //milligrams //for //a //112 //lb //person //(1 //kg= //2.20 //lb)
, A) /
/305 /
/mg //B) //672 //mg //C) //670 //mg //D) //300 //mg //E) //1478 //mg //- //CORRECT //ANSWERS(S)✔✔305 //mg
Z //is //the //number //of //________ //in //an //atom.
A) //protons //and //electrons //B) //protons
D) //neutrons //E) //protons //and //neutrons
C) //electrons //- //CORRECT //ANSWERS(S)✔✔protons
how /
/many /
/kL //does //a //1.25x10^8 //cL //sample //contain? //- //CORRECT //ANSWERS(S)✔✔1.25x //10^3 //kL
Noble //gases //________.
A) //react //vigorously //with //water
C) //are //unreactive
E) //are //good //conductors //of //electricity
B) //are //liquids //at //room //temperature
D) //melt //at //high //temperatures //- //CORRECT //ANSWERS(S)✔✔unreactive
when /
/sugar /
/dissolves /
/in /
/water, /
/this /
/is /
/an //example //of //_________ //A) //change //of //shape //B) //change //of //element //C) //change //of //size
D) //physical //change //E) //chemical //change //- //CORRECT //ANSWERS(S)✔✔physical //change
