WGU C165
Integrated Physical Sciences
Chemistry OA
Exam Readiness
Practice Test & Study Guide
Use this Document to pass
I Was able to score exemplary on the
Exam with this.
Constitute over 80% of the Objective
Assessment (OA).
,The formation of a spherical droplet of liquid water is the result of
surface tension in liquids. Which type of property is the ability of
water to flow and change shape?
Microscopic
Macroscopic
Macroscopic properties are the properties that we observe when a large
number of particles interact.
Which of the following are properties of both solids and
liquids? Select 2 s.
Particles vibrate in place.
Matter has a fixed shape.
Particles are close together.
Matter cannot be compressed.
Particles are close together in both liquids and solids.
Matter cannot be compressed in liquids and solids.
Why are gases compressible?
Because each particle gets smaller when many particles are pushed
together
Because there is a lot of air in gas
Because the particles are far apart and can be pushed closer together
Because a strong, attractive force draws the particles together
Because the particles are far apart and can be pushed closer together
Gases are compressible because the particles are far apart and can be
pushed closer together.
,Hydrogen sulfide (H2S), which can be found in crude oil, is toxic and
corrosive. It must be removed before the crude can be used. Crude oil
is separated into different products during a process called refining.
What is hydrogen sulfide?
An element
A compound
A mixture
A compound
Rationale: It has two types of atoms, so it is a compound
The macroscopic properties of solids, liquids, and gases result from
the microscopic properties of the particles of which they are
composed. Why does a solid have a fixed shape (meaning that the
shape does not change)?
Because its particles move rapidly
Because particles only vibrate in place, and cannot move past one
another
Because its particles slide past one another
Because particles only vibrate in place, and cannot move past one another
Rationale: A solid has a fixed shape (meaning that the shape does not
change) because particles vibrate in place.
Fossil fuels are composed mostly of hydrocarbons (molecules of
hydrogen and carbon). What are hydrocarbons?
Inorganic materials
Organic materials
Organic materials
, Rationale: Hydrocarbons are organic molecules, since they consist of
hydrogen and carbon atoms.
What are negatively charged particles that move around an atom's
nucleus called?
Protons
Electrons
Neutrons
Electrons
Rationale: Negatively charged particles that move around the nucleus are
called electrons.
Carbon is an important component of organic compounds. Carbon's
atomic number is 6. What does this mean?
It has 12 protons.
It has 4 protons.
It has 6 protons.
It has 6 neutrons.
It has 6 protons.
Fossil fuels can contain nitrogen. When a chemical bond is formed
between nitrogen and other elements to form a fossil fuel, what are
transferred or shared between atoms?
Protons
Neutrons
Valence electrons
Nonvalence electrons
Valence electrons are transferred or shared when a chemical bond is
formed.
Integrated Physical Sciences
Chemistry OA
Exam Readiness
Practice Test & Study Guide
Use this Document to pass
I Was able to score exemplary on the
Exam with this.
Constitute over 80% of the Objective
Assessment (OA).
,The formation of a spherical droplet of liquid water is the result of
surface tension in liquids. Which type of property is the ability of
water to flow and change shape?
Microscopic
Macroscopic
Macroscopic properties are the properties that we observe when a large
number of particles interact.
Which of the following are properties of both solids and
liquids? Select 2 s.
Particles vibrate in place.
Matter has a fixed shape.
Particles are close together.
Matter cannot be compressed.
Particles are close together in both liquids and solids.
Matter cannot be compressed in liquids and solids.
Why are gases compressible?
Because each particle gets smaller when many particles are pushed
together
Because there is a lot of air in gas
Because the particles are far apart and can be pushed closer together
Because a strong, attractive force draws the particles together
Because the particles are far apart and can be pushed closer together
Gases are compressible because the particles are far apart and can be
pushed closer together.
,Hydrogen sulfide (H2S), which can be found in crude oil, is toxic and
corrosive. It must be removed before the crude can be used. Crude oil
is separated into different products during a process called refining.
What is hydrogen sulfide?
An element
A compound
A mixture
A compound
Rationale: It has two types of atoms, so it is a compound
The macroscopic properties of solids, liquids, and gases result from
the microscopic properties of the particles of which they are
composed. Why does a solid have a fixed shape (meaning that the
shape does not change)?
Because its particles move rapidly
Because particles only vibrate in place, and cannot move past one
another
Because its particles slide past one another
Because particles only vibrate in place, and cannot move past one another
Rationale: A solid has a fixed shape (meaning that the shape does not
change) because particles vibrate in place.
Fossil fuels are composed mostly of hydrocarbons (molecules of
hydrogen and carbon). What are hydrocarbons?
Inorganic materials
Organic materials
Organic materials
, Rationale: Hydrocarbons are organic molecules, since they consist of
hydrogen and carbon atoms.
What are negatively charged particles that move around an atom's
nucleus called?
Protons
Electrons
Neutrons
Electrons
Rationale: Negatively charged particles that move around the nucleus are
called electrons.
Carbon is an important component of organic compounds. Carbon's
atomic number is 6. What does this mean?
It has 12 protons.
It has 4 protons.
It has 6 protons.
It has 6 neutrons.
It has 6 protons.
Fossil fuels can contain nitrogen. When a chemical bond is formed
between nitrogen and other elements to form a fossil fuel, what are
transferred or shared between atoms?
Protons
Neutrons
Valence electrons
Nonvalence electrons
Valence electrons are transferred or shared when a chemical bond is
formed.
