General Chemistry 111: Test 1 Exam 54 Questions with
Verified Answers
The Scientific Method (systematic study) - CORRECT ANSWER 1) Observations
2) Hypothesize
3) Test
4) Evaluate
5) Re-test
Structure of the Atom - CORRECT ANSWER protons and neutrons are located in
the nucleus, electrons are distributed about the nucleus to make the atom
Physical Properties - CORRECT ANSWER appearance, color, taste, odor, melting
point, and boiling point
Chemical Properties - CORRECT ANSWER rusting
Nuclear Transformation - CORRECT ANSWER radioactivity; transformation of
matter (realm of Physics)
Matter - CORRECT ANSWER has mass and volume; takes up space
Chemical Substance - CORRECT ANSWER matter that has a definite composition
and distinct properties
Proust's Law of Definite Composition - CORRECT ANSWER elements combine to
form chemical compounds in the same small whole number ratios everywhere
-Ex: no matter where you find water, the formula will always be H2O (2:1 ratio of
Hydrogen Atom to Oxygen Atom)
Hypothesis - CORRECT ANSWER an untested idea
Theory - CORRECT ANSWER a model, a thoroughly tested hypothesis
, Law - CORRECT ANSWER set of data and observations with no known deviations
Physical Change - CORRECT ANSWER a change in the state of matter, but the
chemical identity remains constant
Chemical Change - CORRECT ANSWER chemical composition of final products
differ from that of their initial reactants
Pure Substance - CORRECT ANSWER A sample of matter, either a single element
or a single compound, that has definite chemical and physical properties
-Ex: Elements and Chemical Compounds
Element - CORRECT ANSWER basic building block of all chemical substances, only
118 known
Chemical Compound - CORRECT ANSWER a chemical combination of two or more
atoms or elements
Homogeneous Mixture - CORRECT ANSWER A mixture in which substances are
evenly distributed throughout the mixture
-Ex: saltwater
Heterogeneous Mixture - CORRECT ANSWER A mixture in which different
materials can be distinguished easily
-Ex: muddy water
Solution - CORRECT ANSWER A homogeneous mixture of two or more substances
Colloids - CORRECT ANSWER A heterogeneous mixture of intermediate sized
particles
-Ex: smoke, milk, blood
The Diatomic 7 - CORRECT ANSWER Hydrogen (H2), Nitrogen (N2), Oxygen (O2),
Fluorine (F2), Chlorine (Cl2), Bromine (Br2), Iodine (I2)
Electrically Neutral Atoms - CORRECT ANSWER the number of protons is equal to
the number of electrons
Verified Answers
The Scientific Method (systematic study) - CORRECT ANSWER 1) Observations
2) Hypothesize
3) Test
4) Evaluate
5) Re-test
Structure of the Atom - CORRECT ANSWER protons and neutrons are located in
the nucleus, electrons are distributed about the nucleus to make the atom
Physical Properties - CORRECT ANSWER appearance, color, taste, odor, melting
point, and boiling point
Chemical Properties - CORRECT ANSWER rusting
Nuclear Transformation - CORRECT ANSWER radioactivity; transformation of
matter (realm of Physics)
Matter - CORRECT ANSWER has mass and volume; takes up space
Chemical Substance - CORRECT ANSWER matter that has a definite composition
and distinct properties
Proust's Law of Definite Composition - CORRECT ANSWER elements combine to
form chemical compounds in the same small whole number ratios everywhere
-Ex: no matter where you find water, the formula will always be H2O (2:1 ratio of
Hydrogen Atom to Oxygen Atom)
Hypothesis - CORRECT ANSWER an untested idea
Theory - CORRECT ANSWER a model, a thoroughly tested hypothesis
, Law - CORRECT ANSWER set of data and observations with no known deviations
Physical Change - CORRECT ANSWER a change in the state of matter, but the
chemical identity remains constant
Chemical Change - CORRECT ANSWER chemical composition of final products
differ from that of their initial reactants
Pure Substance - CORRECT ANSWER A sample of matter, either a single element
or a single compound, that has definite chemical and physical properties
-Ex: Elements and Chemical Compounds
Element - CORRECT ANSWER basic building block of all chemical substances, only
118 known
Chemical Compound - CORRECT ANSWER a chemical combination of two or more
atoms or elements
Homogeneous Mixture - CORRECT ANSWER A mixture in which substances are
evenly distributed throughout the mixture
-Ex: saltwater
Heterogeneous Mixture - CORRECT ANSWER A mixture in which different
materials can be distinguished easily
-Ex: muddy water
Solution - CORRECT ANSWER A homogeneous mixture of two or more substances
Colloids - CORRECT ANSWER A heterogeneous mixture of intermediate sized
particles
-Ex: smoke, milk, blood
The Diatomic 7 - CORRECT ANSWER Hydrogen (H2), Nitrogen (N2), Oxygen (O2),
Fluorine (F2), Chlorine (Cl2), Bromine (Br2), Iodine (I2)
Electrically Neutral Atoms - CORRECT ANSWER the number of protons is equal to
the number of electrons
