Chemistry EOC Part 2 Question Preview (ID: 37617)


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Which describes an atom with an atomic number of 9?
a) 9 protons, 10 neutrons
b) 10 protons, 9 neutrons
c) 4 protons, 5 neutrons
d) 3 protons, 3 neutrons

An atom has 5 protons, 5 electrons, and 5 neutrons. What is the mass number of the atom?
a) 10
b) 15
c) 5
d) None of the above

What is an isotope?
a) Atoms that have a different number of neutrons
b) Atoms that have a different number of electrons
c) Atoms that have a different number of protons
d) None of the above

In the periodic table, the rows are called
a) columns
b) groups
c) periods
d) families

Which of the following elements is classified as a metal?
a) bromine
b) sulfur
c) carbon
d) lithium

Which type of bond is responsible for atoms of pure silver to be bonded together?
a) ionic
b) hydrogen
c) covalent
d) metallic

Which group in the periodic table forms ions that have a valence of 1+?
a) 1
b) 2
c) 3
d) 4

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) radiation
b) electrical
c) convection
d) conduction

When cations and anions join, they form what kind of chemical bond?
a) hydrogen
b) ionic
c) covalent
d) metallic

How is this reaction classified? CaO + H2O -- Ca(OH)2 + heat
a) exothermic
b) endothermic
c) decomposition
d) double displacement

Which of the following elements has the same Lewis dot structure as sodium?
a) Lithium
b) Silicon
c) Germanium
d) Gallium

Which element is an alkaline earth metal?
a) magnesium
b) sodium
c) lithium
d) zinc

Which of the following elements is a transition metal?
a) Zinc
b) Sodium
c) Lithium
d) Calcium

Which pair of elements has the most physical and chemical properties in common?
a) Ge and Se
b) K and Kr
c) Na and Li
d) Ba and Bi

Which of the following atoms has six valence electrons?
a) oxygen
b) carbon
c) nitrogen
d) calcium

Aluminum oxide, Al2O3, is produced by combining Al3+ and O2- particles. What type of compound has been formed?
a) ionic
b) covalent
c) metallic
d) hydrogen

Which accounts for most of the mass of an atom?
a) protons and electrons
b) electrons and neutrons
c) protons and neutrons
d) just protons

Which pair of elements is MOST similar?
a) Ca and F
b) Na and Cl
c) Mg and Be
d) Ar and O

Which of the following are transferred or shared when two atoms react chemically?
a) electrons
b) protons
c) neutrons
d) photons

Which of these is an example of an exothermic chemical process?
a) combustion of gasoline
b) evaporation of water
c) melting of ice
d) photosynthesis of glucose

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