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BIOLOGY 93 UCI MIDTERM 1 KEY TERMS EXAM 2025|
BRAND NEW ACTUAL EXAM WITH 100% VERIFIED
QUESTIONS AND CORRECT SOLUTIONS|
GUARANTEED VALUE PACK| ACE YOUR GRADES.
Hypothesis - (answers)a tentative answer to a well framed question - an
explanation on trial
Prediction - (answers)A logical statement about what will happen if the
hypothesis is correct.
Experiment - (answers)a repeatable procedure that is used to test a hypothesis (a
scientific test carried under controlled condition)
Variable - (answers)factors that vary in an experiment
Controlled Experiment - (answers)An experiment in which all factors are identical
except the one being tested. Compares an experimental group with a control
group
Independent Variable - (answers)the factor manipulated by the researchers
Dependent Variable - (answers)a factor that is measured in the experiment
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Theory - (answers)1)Broader than a hypothesis. 2)broad enough to spin off many
new hypotheses that can be tested. 3) Supported by a great body of evidence
Science - (answers)an approach to understanding the natural world
Element - (answers)is a chemical substance that cannot be broken down to other
substances
Compound - (answers)a substance consisting of 2 or more different elements
combined in a fixed ratio.
Neutron - (answers)a atomic particle that is electrically neutral (0)
Proton - (answers)a atomic particle with one unit of positive charge
Electron - (answers)a atomic particle with one unit of negative charge
Atom - (answers)smallest unit of matter that still retains the properties of an
element. Made up of a neutron/proton nucleus, and shell(s) of electrons
Covalent Bond - (answers)is the sharing of a pair of valence electrons by two
atoms.
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Molecule - (answers)two or more atoms held together by covalent bonds
constitute a molecule
Single bond - (answers)a covalent bond in which two atoms share one pair of
electrons
Double Bond - (answers)a covalent bond produced by the sharing of two pairs of
electrons between two atoms
Valence - (answers)Electrons on the outermost energy level of an atom: electrons
that form bonds.
Electronegativity - (answers)Atom's ability to attract and hold electrons.
Non polar Covalent Bond - (answers)a bond where electrons are shared equally
among two atoms or where symmetric structure causes polarity to cancel out.
Polar Covalent Bond - (answers)Where asymmetric structure and unequal sharing
of electrons between two atoms with different electronegativity values create
partial charges within the molecule.
Ionic Bond - (answers)When an electron is attracted to another atom of higher
electronegativity and the resulting charges create a ionic attraction.
BIOLOGY 93 UCI MIDTERM 1 KEY TERMS EXAM 2025|
BRAND NEW ACTUAL EXAM WITH 100% VERIFIED
QUESTIONS AND CORRECT SOLUTIONS|
GUARANTEED VALUE PACK| ACE YOUR GRADES.
Hypothesis - (answers)a tentative answer to a well framed question - an
explanation on trial
Prediction - (answers)A logical statement about what will happen if the
hypothesis is correct.
Experiment - (answers)a repeatable procedure that is used to test a hypothesis (a
scientific test carried under controlled condition)
Variable - (answers)factors that vary in an experiment
Controlled Experiment - (answers)An experiment in which all factors are identical
except the one being tested. Compares an experimental group with a control
group
Independent Variable - (answers)the factor manipulated by the researchers
Dependent Variable - (answers)a factor that is measured in the experiment
,2|Page
Theory - (answers)1)Broader than a hypothesis. 2)broad enough to spin off many
new hypotheses that can be tested. 3) Supported by a great body of evidence
Science - (answers)an approach to understanding the natural world
Element - (answers)is a chemical substance that cannot be broken down to other
substances
Compound - (answers)a substance consisting of 2 or more different elements
combined in a fixed ratio.
Neutron - (answers)a atomic particle that is electrically neutral (0)
Proton - (answers)a atomic particle with one unit of positive charge
Electron - (answers)a atomic particle with one unit of negative charge
Atom - (answers)smallest unit of matter that still retains the properties of an
element. Made up of a neutron/proton nucleus, and shell(s) of electrons
Covalent Bond - (answers)is the sharing of a pair of valence electrons by two
atoms.
, 3|Page
Molecule - (answers)two or more atoms held together by covalent bonds
constitute a molecule
Single bond - (answers)a covalent bond in which two atoms share one pair of
electrons
Double Bond - (answers)a covalent bond produced by the sharing of two pairs of
electrons between two atoms
Valence - (answers)Electrons on the outermost energy level of an atom: electrons
that form bonds.
Electronegativity - (answers)Atom's ability to attract and hold electrons.
Non polar Covalent Bond - (answers)a bond where electrons are shared equally
among two atoms or where symmetric structure causes polarity to cancel out.
Polar Covalent Bond - (answers)Where asymmetric structure and unequal sharing
of electrons between two atoms with different electronegativity values create
partial charges within the molecule.
Ionic Bond - (answers)When an electron is attracted to another atom of higher
electronegativity and the resulting charges create a ionic attraction.
