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Worksheets2.1 Review Quiz
Total questions: 15
Worksheet time: 8mins
How are electric charges distributed within the atom?
Positive and negative charges are distributed evenly.
Positive charges are concentrated in the nucleus; negative charges surround
the nucleus.
Negative charges are concentrated in the nucleus; positive charges surround
the nucleus.
Both positive and negative charges are concentrated in the nucleus.
When electrons transfer from one atom to another, both atoms become
ions
isotopes
molecules
compounds
When electrons transfer from one atom to another, what holds them together?
polar bonds
covalent bonds
hydrogen bonds
ionic bonds
When electrons are shared between
atoms, a(n) __________ forms.
ionic bond
covalent bond
hydrogen bond
van der waals forces
When a covalent bond forms between
atoms the joined atoms become a(n)
element
molecule
isotope
ion
Deuterium is an isotope of hydrogen. It has a mass number of two. Which
describes a deuterium atom?
a nucleus of one proton and one neutron, which is orbited by one electron
a nucleus of one proton, which is orbited by one neutron and one electron
nucleus of one neutron, which is orbited by one electron
a nucleus of two neutrons which is orbited by two electrons
A carbon atom has 6 protons and 6 electrons. Carbon has three naturally
occurring isotopes, carbon-12, carbon-13, and carbon-14. Which of these
statements is true about carbon and its isotopes?
All carbon atoms have six neutrons.
All carbon atoms have six protons and six electrons.
Atoms of all carbon isotopes have either more than 6 electrons or fewer than
6 electrons.
Atoms of some naturally-occurring carbon isotopes may have twelve
neutrons.
How does a molecular compound compare to the elements that make up
the compound?
The properties of a compound depend on the identity of the component
elements, and not the chemical bonds they form.
The properties of a compound depend on the size of the molecule, and not
the component elements.
The properties of a compound are generally similar to the properties of the
elements that make it up.
The properties of a compound are usually very different from the properties of
the elements that make it up.
Molecules are attracted to one another by Van der Waals forces. How do
Van der Waals forces compare with ionic and covalent bonds?
Van der Waals forces are stronger than ionic and covalent bonds.
Van der Waals forces are weaker than ionic and covalent bonds.
Van der Waals forces are stronger than ionic bonds, but weaker than
covalent bonds.
Van der Waals forces are stronger than covalent bonds, but weaker than
ionic bonds.
Which two types of particles are present in equal numbers in an atom, but not in
an ion?
protons and electrons
protons and neutrons
inner-shell electrons and outer-shell electrons
protons and inner-shell electrons
The elements sodium and chlorine react to form the chemical compound sodium
chloride. How would you predict the properties of sodium chloride compare with
those of its constituent elements?
very different
similar in most ways, but not identical
identical in all ways
an average or mixture of the two sets of properties
The diagram shows the structure of a water molecule. What allows the three atoms in a water molecule to stay together?
covalent bonds formed by shared electrons between atoms
covalent bonds formed by electrons that transfer between atoms
Ionic bonds formed by electrons that transfer between atoms
hydrogen bonds formed only by the electrons of the hydrogen atoms
What event changes an atom into an ion?
the sharing of electrons with another atom
the gain or loss of one or more electrons
the gain or loss of one or more neutrons
a chemical reaction that forms a molecule
A scientist is studying two isotopes of sodium, labeled A and B. In Isotope A,
each of the atoms has 11 protons, 12 neutrons, and 11 electrons. What could be
the atomic structure of Isotope B?
11 protons, 12 neutrons, and 10 electrons
12 protons, 12 neutrons, and 11 electrons
11 protons, 13 neutrons, and 11 electrons
11 protons, 12 neutrons, and 12 electrons
Hobie draws this model of a carbon atom. Which change to the model would improve its accuracy?
Move each neutron so it is next to a proton.
Move the protons and neutrons to a small space in the center.
Move the protons and electrons to a small space in the center.
Move all of the particles so that they are evenly spaced.
