What Am I?
I am a type of
mixture; I am formed
when one substance,
such as water, dissolves
other substances.
► Solution
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I am a chemical reaction that
absorbs more energy than I
release; my products have a
higher bond energy than my
reactants
► Endothermic
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I am the type of molecule that
stores genetic information in
living things
► Nucleic acid
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I am an attraction between a
slightly positive hydrogen atom
and a slightly negative atom,
such as oxygen or nitrogen
► Hydrogen bond
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I am a catalyst for a chemical
reaction in living things; in
almost all cases I am a protein
► Enzyme
►
Chemical bonds hold me
together; I always contain
atoms of more than one
element
► Compound
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I am a carbon chain found in
many lipids; I can be either
saturated or unsaturated
► Fatty acid
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I have a positive charge if I
lose an electron; I have a
negative charge if I gain an
electron
► Ion
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I am a reactant an enzyme
acts on; I bind to an enzyme’s
active site
► Substrate
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I am made of amino acids;
there are many different types
of me with many different
functions in living things.
► Protein
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I am a type of bond that
involves sharing of an electron
pair; I hold together a water
molecule.
► Covalent bond
►
I am an attraction between
different types of molecules; I
am the reason why water clings
to glass.
► Adhesion
►
I contain carbon, hydrogen,
and oxygen; Sometimes I am
found in the cell walls of plants
► Carbohydrate (or
polysaccharide, or cellulose)
►
I am the amount of
energy that is needed for
a chemical reaction to
start; after I am added,
the reaction can take
place on its own
► Activation energy
►
I am always found in
organic molecules.
► Carbon
►
Same or Different?
Do the pair of words describe the same
thing or different things?
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Atom/Element
Same
Solvent/Solute
Different
Acid/Base
Different
Catalyst/Enzyme
Same
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Cohesion/Adhesion
Different
Monomer/Polymer
Different
Enzyme/Protein
Same
Endothermic/Exothermic
Different
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Substrate/Reactant
Same
Compound/Element
Different
Situational Vocabulary: Which
choice most closely relates to the
vocabulary word?
► Amino Acid: (a) lemon juice in iced tea (b) one
of many beads on a string
► (b)
► Atom: (a) unicellular organism (b) multicellular
organism
►(a)
► Covalent bond: (a) linking hands in a human
chain (b) passing a basketball
►(a)
Lipid: (a) a car’s headlights (b) a
car’s gas tank
► (b)
► Activation energy: (a) starting a lawnmower with the pull cord (b) eating
sugary foods
► (a)
► Solute: (a) getting lost in a crowd (b)
answering a math problem
► (a)
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Water molecule: (a) a ring (b)
head and ears of a cartoon mouse
► (b)
► Activation energy: (a) a mountain
(b) long, capital letter E
► (a)
► Triglyceride: (a) long, capital
letter E (b) jigsaw puzzle pieces
► (a)
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►pH scale: (a) letters of the alphabet (b)
meterstick
► (b)
► Starch: (a) savings account in a bank (b) loose
change in your pocket
► (a)
► Amino acids: (a) letters of the alphabet (b)
magnets
► (a)