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Chemistry EOC Part 2
Test Description: EOC Review
Instructions: Answer all questions to get your test result.
1) Which describes an atom with an atomic number of 9?
A
10 protons, 9 neutrons
B
4 protons, 5 neutrons
C
3 protons, 3 neutrons
D
9 protons, 10 neutrons
2) An atom has 5 protons, 5 electrons, and 5 neutrons. What is the mass number of the atom?
A
10
B
None of the above
C
15
D
5
3) What is an isotope?
A
Atoms that have a different number of neutrons
B
None of the above
C
Atoms that have a different number of protons
D
Atoms that have a different number of electrons
4) In the periodic table, the rows are called
A
columns
B
periods
C
groups
D
families
5) Which of the following elements is classified as a metal?
A
lithium
B
carbon
C
sulfur
D
bromine
6) Which type of bond is responsible for atoms of pure silver to be bonded together?
A
covalent
B
hydrogen
C
metallic
D
ionic
7) Which group in the periodic table forms ions that have a valence of 1+?
A
1
B
4
C
2
D
3
8) A metal spoon is used to stir a pot of boiling water. The person holding the metal spoon feels the spoon get hot. Which best describes the transfer of heat in the spoon?
A
conduction
B
radiation
C
convection
D
electrical
9) When cations and anions join, they form what kind of chemical bond?
A
hydrogen
B
covalent
C
metallic
D
ionic
10) How is this reaction classified? CaO + H2O -- Ca(OH)2 + heat
A
decomposition
B
endothermic
C
double displacement
D
exothermic
11) Which of the following elements has the same Lewis dot structure as sodium?
A
Lithium
B
Silicon
C
Germanium
D
Gallium
12) Which element is an alkaline earth metal?
A
lithium
B
sodium
C
zinc
D
magnesium
13) Which of the following elements is a transition metal?
A
Lithium
B
Calcium
C
Sodium
D
Zinc
14) Which pair of elements has the most physical and chemical properties in common?
A
Na and Li
B
Ge and Se
C
Ba and Bi
D
K and Kr
15) Which of the following atoms has six valence electrons?
A
oxygen
B
calcium
C
nitrogen
D
carbon
16) Aluminum oxide, Al2O3, is produced by combining Al3+ and O2- particles. What type of compound has been formed?
A
covalent
B
metallic
C
hydrogen
D
ionic
17) Which accounts for most of the mass of an atom?
A
protons and neutrons
B
electrons and neutrons
C
protons and electrons
D
just protons
18) Which pair of elements is MOST similar?
A
Ca and F
B
Ar and O
C
Mg and Be
D
Na and Cl
19) Which of the following are transferred or shared when two atoms react chemically?
A
electrons
B
neutrons
C
protons
D
photons
20) Which of these is an example of an exothermic chemical process?
A
evaporation of water
B
melting of ice
C
photosynthesis of glucose
D
combustion of gasoline
*select an answer for all questions
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