1. Chapter 2- Tutorial
Dr. Nouf Alotaibi

2. Rutherford's experiment with alpha particle scattering by gold foil established that:
Electrons have negative charges.
Protons are not evenly distributed throughout an atom.
Atoms are composed of protons, neutrons, and electrons.
Protons are located in the nucleus of an atom.
Two isotopes of an element differ in their:
Atomic masses
Atomic numbers
Numbers of protons
Numbers of electrons

3. How many protons, neutrons, and electrons are there in an atom of chlorine-39?Cl
From period table- find electron no.= proton no. 39 Cl 17

4. From periodic table Z= 20 A=40 20 protons 20-2=18 electron
How many protons and electrons are present in a Ca2+ ion?
20 protons and 18 electrons
18 protons and 20 electrons
20 protons and 21 electrons
20 protons and 19 electrons
From periodic table
Z= 20
A=40
20 protons
20-2=18 electron
40-20=20 neutron

5. How many protons, neutrons and electrons are there in the anion  31P3–?
A. 15 protons, 16 neutrons, 12 electrons
B. 16 protons, 15 neutrons, 18 electrons
C. 15 protons, 16 neutrons, 18 electrons
D. 12 protons, 19 neutrons, 15 electrons
From periodic table
Z= 15
A=31
15 protons
15+3=18 electron
31-15=16 neutron

6. What is the correct empirical formula ratio for hydrazine (N2H4)?
B) 1:1
C) 2:2
D) 2:4
Molecular formula imperical formula
N2H N1H2

7. Co is a transition metal Cox+ Cl- X + -1*3=0 X=+3 Co3+
What is the formula for the ionic compound formed by calcium ions and phosphate ions?
CaPO4
Ca2(PO4)2
Ca3PO4
Ca3(PO4)2
The correct Stock system name for CoCl3 is:
Cobalt trichloride
Cobalt(III) chloride
Cobalt(III) trichloride
Cobalt chloride
Ca from group 2
Ca PO43-
Ca☐(PO4)☐
Ca3(PO4)2
Co is a transition metal
Cox Cl-
X + -1*3=0
X=+3
Co3+

8. Cu is a transition metal Cux+ SO42- X + -2*1=0 X=+2 Cu2+
The correct name of (NH4)2SO3 is:
Ammonia sulfite
Ammonium sulfate
Ammonia sulfate
Ammonium sulfite
The correct Stock system name for CuSO4. 5 H2O is:
Copper(II) sulfate pentahydrate
Copper(II) sulfate hydrate
Copper(I) sulfate pentahydrate
Copper sulfate pentahydrate
Cu is a transition metal
Cux SO42-
X + -2*1=0
X=+2
Cu2+

9. The correct name of N2O4 is: 
dinitride pentoxide
Dinitrogen tetroxide
Nitro-oxalic acid
dinitrogen monoxide
The correct name of H2SO4 is: 
Dihydrogen sulfur tetroxide
hydrosulfuric acid
Sulfurous acid
Sulfuric acid

10. The correct name of CCl4 is:
Monocarbon tetrachloride
monocarbon tetrachlorine
Carbon tetrachloride
carbide pentachlorine
The correct name of SO3 is:
sulfate
Sulfur trioxide
Sulfite
sulfuric acid

11. What is the formulas for the following chemical compounds:
silicon dioxide
nickel (III) sulfide
potassium carbonate
ammonium oxide
SiO2
Ni2S3
K2CO3
(NH4)2O

12. Which of the following represents the correct name of H2SO4?
Sulfurous acid
Sulfuric acid
Hydro sulfuric acid
Hydro sulfurous acid
Which of the following is the correct name of H2SO3?
Sulfuric acid
Hydro sulfurous acid
Sulfurous acid
Hydro sulfuric acid

13. In which of the following are the formulas of oxyacids correctly matched with their name?
H2SO4 – Sulfurous acid
HNO2 – Nitric acid
HNO3 – Nitrous acid
HClO2 – Chlorous acid
Which of the following is the correct name of HNO2?
Hydro nitrous acid
Hydro nitric acid
Nitric acid
Nitrous acid

14. NaClO is named:
sodium chlorite
sodium chlorate
sodium hypochlorite
sodium hypochlorate