1.
Which statement about subatomic particles is NOT true?
a. Protons and neutrons have the same charge.
b. Protons and electrons have opposite charges.
c. Protons and neutrons have nearly the same mass.
d. Unlike protons and electrons, neutrons have no charge.
2.
Which statement about subatomic particle IS true?
a. Neutrons have no charge and no mass.
b. Unlike protons or neutrons, electrons have no mass.
c. An electron has far less mass than either a proton or neutron.
d. Protons, neutrons, and electrons all have about the same mass.
3.
Atoms of the same element ALWAYS have the same number of:
a. protons
c. neutrons
b. orbitals
d. electrons
4.
Which family of elements is non-reactive (complete valence electrons)?
a. Halogens (e.g. F)
c. Alkali metals (e.g. Li)
b. Noble gases (e.g. Ne)
d. Alkaline earth metals (e.g. Be)
5.
Which element is in the 5th period and 2nd family?
a. Sulfur (S)
c.
b. Oxygen (O)
d.
Niobium (Nb)
Strontium (Sr)
6.
How many valence electrons does the element Phosphorus (P) have?
a. 3
c. 5
b. 4
d. 6
7.
The most reactive elements tend to have:
a. zero valence electrons
b. eight valence electrons
8.
c.
d.
In an ionic bond, electrons are:
a. shared
b. destroyed
c.
d.
two or six valence electrons
one or seven valence electrons
transferred
none of the above
9.
If a neutral atom/molecule gains an electron it becomes a _________ ion.
a. positive
b. negative
c. neutral
10.
The chemical formula for a molecule that has 2 sodium (Na) atoms and 1 oxygen (O) atom would be?
a. NaO
b. Na2O
c. NaO2
11.
What type of bond would magnesium and oxygen form?
a. Ionic
b. Covalent
c. Metallic
Balance the chemical reaction: H2SO4 + NaOH → Na2SO4 + H2O
12.
13.
a.
b.
c.
14.
The previous chemical reaction produces some heat. This reaction is:
Exothermic
Endothermic
None of the above
List the number of protons, neutrons and electrons for the isotope,
oxygen-18:
15.
a.
b.
Is ozone (O3) a:
molecule?
compound?
YES
YES
NO
NO
16.
a.
b.
Given the wave above, determine the:
amplitude
wavelength
a.
b.
Electricity flowing through a wire into iron, cobalt, or nickel produces:
a nuclear effect
c. a gravitational effect
a generator effect
d. an electromagnetic effect
a.
b.
Moving a wire through a magnetic field (or vice versa) produces:
a nuclear effect
c. a gravitational effect
a generator effect
d. an electromagnetic effect
a.
b.
c.
A sound wave can be described as both:
mechanical and transverse
mechanical and longitudinal
electromagnetic and transverse
a.
b.
Which form of light has a LONGER wavelength?
X-rays
c. Visible light
Microwaves
d. Ultra-violet (U.V.)
a.
b.
Which form of light is MORE energetic?
X-rays
Microwaves
17.
18.
19.
20.
21.
c.
d.
Visible light
Ultra-violet (U.V.)
22.
In general, what would you do to DECREASE the rate of a reaction?
a. Add more energy to the system.
c. Continuously mix the reactants together.
b. Form the reactants into larger pieces.
d. Increase the concentration of the reactants.
23.
All of the following are true about a catalyst EXCEPT:
a. A catalyst increases the rate of reaction.
b.
A catalyst is consumed during a reaction.
c.
A catalyst decreases the activation energy for a reaction.
d.
A catalyst is also called an enzyme in biological reactions.
24. Collison theory states that:
a.
Both C and D must happen.
b.
Neither C nor D must happen.
c.
Particles must collide with sufficient energy to form products.
d.
Particles must collide with sufficient orientation to form products.
25. This reaction is both:
a.
A combination and exothermic reaction.
b.
A combination and endothermic reaction.
c.
A decomposition and exothermic reaction.
d.
A decomposition and endothermic reaction.
26. Determine the products for a double-exchange reaction between potassium iodide, KI, and lead (II) nitrate, Pb(NO3)2:
a.
PbI and KNO3
c.
PbI and K(NO3)2
b.
PbI2 and KNO3
d.
PbI2 and K(NO3)2
27. Neutralization reactions between an acid and a base will produce:
28.
29.
a.
Water and salt
c.
An acid and base
b.
A metal and salt
d.
Carbon dioxide and water
Which element is the most electronegative?
a. oxygen (O)
c.
francium (Fr)
b.
d.
hydrogen (H)
fluorine (F)
The maximum number of electrons that can occupy the 4 th energy level is:
a.
2
c.
18
b.
8
d.
32
30. In general, ionic compounds are composed of elements that are:
a.
metal and metal
c.
nonmetal and nonmetal
b.
metal and nonmetal
d.
none of the above choices
31. The element in group 16 and period 3 of the periodic table has this number of valence electrons:
a.
3
c.
5
b.
4
d.
6
32. The correct electron configuration for iodine (I) is:
a.
[Kr] 5s25p5
c.
[Kr] 5s24d105p5
b.
[Xe] 5s25p5
d.
[Kr] 5s25d105p5
33. The correct name for the ionic compound, VN, is:
a.
vanadium nitrate
c.
vanadium (I) nitride
b.
vanadium nitride
d.
vanadium (III) nitride
34. The correct formula for the ionic compound, potassium phosphate, is:
a.
K 3P
c.
K3PO4
b.
KPO4
d.
K(PO4)3
35. The number of protons (P), neutrons (N) and electrons (E) in a neutral atom of germanium (Ge) are:
a.
P-32
N-32
E-32
c.
P-32
N-73
E-32
b.
P-32
N-41
E-32
d.
P-32
N-105
E-32
36. The number of core electrons in an atom of chlorine (Cl) are:
a.
10
c.
15
b.
12
d.
17
37. The element that will form the most covalent bonds is:
a.
carbon
c.
nitrogen
b.
oxygen
d.
hydrogen
38. All of the following are ionic compounds, except:
a.
BeF2
c.
NBr3
b.
Li3N
d.
Na2O
39. Mg2+ is an ion of magnesium that has:
a.
10 protons and 12 electrons
c.
12 protons and 14 electrons
b.
12 protons and 10 electrons
d.
14 protons and 12 electrons
40. The correct Lewis dot structure for hypochlorous acid, a compound containing H, Cl, and O is:
a.
.. ..
: Cl : O : H :
.. ..
c.
.. ..
: Cl : O : H
.. ..
b.
..
..
: Cl : H : O :
..
..
d.
.. ..
O : Cl : H
.. ..
41. The ion with the largest ionic radius is:
a.
I-
c.
Br -
b.
Cl -
d.
Rb +
42. Which of the following statements regarding the periodic table are correct?
a.
Elements in the alkali metal group have similar chemical properties.
b.
Elements in the alkali earth metal group all form ions with a 2+ charge.
c.
Elements in the halogen group have the same number of valence electrons.
d.
All of the above are true.
43. The following gases are diatomic molecules, except:
a.
helium
c.
chlorine
b.
oxygen
d.
hydrogen
44. What would you expect to observe if you added copper metal to a solution of silver nitrate?
a.
b.
Both C and D.
Nothing/no reaction.
c.
d.
Copper would dissolve.
Silver would become a solid metal.