Name:     ID: 
 
Email: 

Unit 4 On Level Test A

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
An example of an extensive property of matter is
a.
temperature.
b.
pressure.
c.
mass.
d.
hardness.
 

 2. 
Which of the following is considered a physical property of a substance?
a.
reaction with an acid
b.
products of decomposition
c.
malleability
d.
ability to oxidize
 

 3. 
Which of the following changes to a metal is a chemical change?
a.
bending
b.
melting
c.
rusting
d.
polishing
 

 4. 
In which of the following is the number of neutrons correctly represented?
a.
mc004-1.jpgF has 0 neutrons.
b.
mc004-2.jpgAs has 108 neutrons.
c.
mc004-3.jpgMg has 24 neutrons.
d.
mc004-4.jpgU has 146 neutrons.
 

 5. 
Which of the following statements is true?
a.
Protons are positively charged and have a mass of 1 amu.
b.
Electrons are negatively charged and have a mass of 1 amu.
c.
The nucleus of an atom is positively charged and never has a mass of 1 amu.
d.
Neutrons are negatively charged and have a mass of 1 amu.
 

 6. 
What is the maximum number of orbitals in the p sublevel?
a.
2
b.
3
c.
4
d.
5
 

 7. 
Of the elements Pt, V, Li, and Kr, which is a nonmetal?
a.
Pt
b.
V
c.
Li
d.
Kr
 

 8. 
Which of the following elements has the smallest atomic radius?
a.
Li
b.
K
c.
O
d.
S
 

 9. 
Which of the following factors contributes to the increase in ionization energy from left to right across a period?
a.
an increase in the shielding effect
b.
an increase in the size of the nucleus
c.
an increase in the number of protons
d.
fewer electrons in the highest occupied energy level
 

 10. 
How many valence electrons are in a silicon atom?
a.
2
b.
4
c.
6
d.
8
 

 11. 

What does the 3 represent in the following electron configuration, 1s2 2s2 2p6 3s2 3p6?
a.
Electrons
c.
Sublevel
b.
Orbitals
d.
Energy level of electrons
 

 12. 
What is the Noble Gas electron configuration for an atom of Germanium (Ge)?
a.
[Kr] 4s2 4d10 4p2
c.
[Kr] 4s2 3d10 4p2     
b.
[Ar] 4s2 4d10 4p2
d.
[Ar] 4s2 3d10 4p2
 

 13. 
Chemist can identify the composition of some unknown salts by conducting a flame test. When potassium salts are heated in a flame, a purple color is observed. What is the electron configuration of a Potassium (K) atom?
a.
1s2 2s2 2p6 3s2 3p6 4d1     
c.
1s2 2s2 2p6 3s2 3p6 4s1 
b.
1s2 2s2 2p6 3s2 3p6 3d1
d.
1s2 2s2 2d6 3s2 3p6 4s2
 

 14. 
How many valence electrons are surrounding an element with the following electron configuration: 
1s2 2s2 2p6 3s2 ?
a.
3
c.
12
b.
2
d.
6
 

 15. 
What is the electron configuration for Manganese (Mn), atomic number 25?
a.
1s2 2s2 2p6 3s2 3p6 4s2 3d5
c.
1s2 2s2 2p6 3s2 3p6 4s2 3d10
b.
1s2 2s2 2p6 3s2 3p6 4s2
d.
1s2 2s2 2p6 3s2 3p6
 

 16. 
How many electrons are required to fill the 3rd energy level with the maximum number of electrons?
a.
2
c.
8
b.
18
d.
32
 

 17. 
What element has the following electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d104p65s24d8 ?
a.
Platinum (Pt)     
c.
Palladium (Pd)
b.
Nickel (Ni)     
d.
Tin (Sn)
 

 18. 
mc018-1.jpg

Which of the waves above has the highest energy?
a.
Gamma
c.
Ultraviolet
b.
Infrared
d.
Microwave
 

 19. 
As wavelength increases, what happens to Frequency and Energy?
a.
Both Increase
c.
Frequency increases, Energy decreases
b.
Both Decrease
d.
Frequency decreases, Energy increases
 

 20. 
Sodium, mercury, argon and neon are used in the production of lamps. There are fewer safety guidelines regarding the handling of neon and argon than for mercury and sodium. Which of the following best describes the properties of elements in the same family as neon and argon?
a.
Gaseous at room temperature and highly reactive
c.
Mostly unreactive
b.
Solid at room temperature
d.
Solid at room temperature and mostly unreactive with strong acids
 

 21. 
As the atomic number increases within a group of elements, the atomic radius usually --
a.
decreases
c.
increases
b.
remains the same as the one above it
d.
decreases, then increases
 

 22. 
One of the wavelengths emitted by hydrogen atoms is
6.56 x 10-7 m. Calculate the frequency if the speed of light is 3.00 x 108 m/s..
a.
4.57 x 1014 Hz
c.
1.97 x 1014 Hz
b.
4.57 x 10-6 Hz
d.
4.57 x 10-7 Hz
 

 23. 
Which of the following statements is an accurate description of the ionization energies of elements within the periodic table?
a.
The ionization energy of sulfur is greater than that of potassium.
c.
The ionization energy of magnesium is greater than that of sulfur.
b.
The ionization energy of iodine is greater than that of fluorine.
d.
The ionization energy of krypton is greater than that of neon.
 

 24. 
A red light is measured to have a wavelength of 6.71 x 10-7 m. Given the speed of light (3.00 x 108 m/s) and Planck’s constant (6.63 x 10-34 Js), calculate the energy of one photon of this light.
a.
1.33 x 10-18 J
c.
2.96 x 10-19 J
b.
1.48 x 10-18 J
d.
4.42 x 10-3 J
 

 25. 
A sample of Element X is found to contain 72.15% of isotope type 1 (84.9118 amu) and 27.85% of isotope type 2 (86.9092 amu). Calculate the average atomic mass.
a.
85.13 amu
c.
86.21 amu
b.
85.47 amu
d.
86.49 amu
 

 26. 
Which of the following describes the ability of a metal to be drawn into wires or be bent?
a.
malleable
c.
ductility
b.
soluble
d.
conductivity
 

 27. 
Brass is an alloy made of copper and zinc.  To make brass copper is mixed with zinc when both metals are at the liquid state.  During the mixing process no chemical reaction takes place. After mixing, brass appears to be uniform throughout.  Brass must be a(n):
a.
an element
c.
heterogenous mixture
b.
homogenous mixture
d.
pure substance
 

 28. 
As the wavelength of a wave increases, which is also TRUE?
a.
the energy increases
c.
the frequency increases
b.
planks constant increases
d.
the frequency decreases
 

 29. 
Which of the following is a pure substance?
a.
Sodium Chloride and water (NaCl + H2O )
c.
Magnesium (Mg)
b.
Hydrogen Fluoride and Potassium Oxide (HF + K2O )
d.
all of the above
 

 30. 
Where in an atom is MOST of its mass found?
a.
in electron clouds
c.
in the 1s and 2s orbitals
b.
in the f orbital
d.
in the nucleus
 



 
         Start Over