CARNEGIE MELLON UNIVERSITY

09-105 Introduction to Modern Chemistry

Quiz #1

January 21, 1999

Name

Section /Instructor

10 points total

 

H                                 He
Li Be                     B C N O F Ne
Na Mg                     Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac* Rf Ha Sg Ns Hs Mt 110 111 112            
  La* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu  
  Ac* Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lw  

 


Element Z = 17 has what chemical symbol? Cl

Element Z = 11 has what atomic number? 11

How many electrons are there in an atom of element Z = 9? 9

How many protons are there in an atom of element Z = 20? 20

How many electrons are there in Mg2+? 12-2=10

 1 pt
each

Circle the correct answer(s) below.

O2

O3

CaF2

HF

C60

(a)

(b)

(c)

(d)

(e)


Which of the above corresponds to a molecule? (a), (b), (c), (d), (e)? all of them

Which of the above corresponds to a compound? (a), (b), (c), (d), (e)? c and d

 -1 each
error
up to
5 total