WGU C165 Integrated Physical
Sciences Exam Questions and
Answers
Compound - Answer-a chemical combination of two or more different elements in a
fixed ratio
chemical bonds - Answer-the attractive forces that hold atoms together
organic compound - Answer-Compounds that contain carbon and hydrogen
Inorganic compounds - Answer-Compounds that are not organic compounds
pure substance - Answer-A chemical containing only one type of element or compound
Mixture - Answer-A combination of two or more substances that are not chemically
combined and not present in a specific, fixed ratio
heterogeneous mixture - Answer-A mixture in which pure substances are unevenly
distributed throughout the mixture
homogeneous mixture - Answer-A mixture in which substances are evenly distributed
throughout the mixture
macroscopic properties - Answer-The properties observed when a large number of
particles interact
microscopic properties - Answer-Properties at the small scale, such as properties of
atoms and molecules
Troposphere - Answer-The lowest layer of Earth's atmosphere where weather occurs
Stratosphere - Answer-the layer above the troposphere; the ozone layer is found in this
layer, planes fly here
ozone layer - Answer-Protective layer in atmosphere that shields earth from UV
radiation.
Mesosphere - Answer-The layer of Earth's atmosphere immediately above the
stratosphere, where meteors burn up
, Thermosphere - Answer-The atmospheric layer above the mesosphere where auroras
occur, ISS orbits here
Exosphere - Answer-The outer layer of the atmosphere
physical change - Answer-When matter changes in appearance without changing in
chemical composition
chemical change - Answer-When matter changes in chemical composition
chemical reaction - Answer-When chemical bonds are formed/broken in a chemical
change
Reactants - Answer-The substances present before a chemical reaction begins
Products - Answer-The substances formed during a chemical reaction
Ion - Answer-An atom with a net electric charge (i.e., not neutral)
ionic bond - Answer-Chemical bond formed between a positively charged atom and a
negatively charged atom, where a valence electron is given from one to the other
ionic compound - Answer-Compounds formed via ionic bonds, usually a combination of
a metal and one or more non-metals
covalent bond - Answer-Bond formed between atoms that share valence electrons
metallic bond - Answer-Bond formed between atoms of metals using an electron sea
where valence electrons move about freely
period - Answer-Name for a row in the periodic table
group - Answer-Name for a column in the periodic table
family - Answer-Name for elements in the same group of the periodic table that have the
same number of valence electrons
metals - Answer-Term for elements that tend to lose electrons
malleability - Answer-The ability to be shaped by pounding without breaking apart
ductility - Answer-The ability to be stretched into wire
nonmetals - Answer-Term for elements with electrons very tightly associated with the
nucleus
Sciences Exam Questions and
Answers
Compound - Answer-a chemical combination of two or more different elements in a
fixed ratio
chemical bonds - Answer-the attractive forces that hold atoms together
organic compound - Answer-Compounds that contain carbon and hydrogen
Inorganic compounds - Answer-Compounds that are not organic compounds
pure substance - Answer-A chemical containing only one type of element or compound
Mixture - Answer-A combination of two or more substances that are not chemically
combined and not present in a specific, fixed ratio
heterogeneous mixture - Answer-A mixture in which pure substances are unevenly
distributed throughout the mixture
homogeneous mixture - Answer-A mixture in which substances are evenly distributed
throughout the mixture
macroscopic properties - Answer-The properties observed when a large number of
particles interact
microscopic properties - Answer-Properties at the small scale, such as properties of
atoms and molecules
Troposphere - Answer-The lowest layer of Earth's atmosphere where weather occurs
Stratosphere - Answer-the layer above the troposphere; the ozone layer is found in this
layer, planes fly here
ozone layer - Answer-Protective layer in atmosphere that shields earth from UV
radiation.
Mesosphere - Answer-The layer of Earth's atmosphere immediately above the
stratosphere, where meteors burn up
, Thermosphere - Answer-The atmospheric layer above the mesosphere where auroras
occur, ISS orbits here
Exosphere - Answer-The outer layer of the atmosphere
physical change - Answer-When matter changes in appearance without changing in
chemical composition
chemical change - Answer-When matter changes in chemical composition
chemical reaction - Answer-When chemical bonds are formed/broken in a chemical
change
Reactants - Answer-The substances present before a chemical reaction begins
Products - Answer-The substances formed during a chemical reaction
Ion - Answer-An atom with a net electric charge (i.e., not neutral)
ionic bond - Answer-Chemical bond formed between a positively charged atom and a
negatively charged atom, where a valence electron is given from one to the other
ionic compound - Answer-Compounds formed via ionic bonds, usually a combination of
a metal and one or more non-metals
covalent bond - Answer-Bond formed between atoms that share valence electrons
metallic bond - Answer-Bond formed between atoms of metals using an electron sea
where valence electrons move about freely
period - Answer-Name for a row in the periodic table
group - Answer-Name for a column in the periodic table
family - Answer-Name for elements in the same group of the periodic table that have the
same number of valence electrons
metals - Answer-Term for elements that tend to lose electrons
malleability - Answer-The ability to be shaped by pounding without breaking apart
ductility - Answer-The ability to be stretched into wire
nonmetals - Answer-Term for elements with electrons very tightly associated with the
nucleus
