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WorksheetsChapter 2 Biology Vocabulary
Total questions: 29
Worksheet time: 15mins
What is matter?
building block; smallest particle of an element
pure substance of only one type of atom
physical stuff of the universe; has mass and volume
stored chemical energy that holds two atoms together
What is are atoms?
building blocks of matter; smallest particles of an element
organic compounds that serve as building blocks of proteins
simple carbohydrates that are a source of both energy and structure
naturally occurring catalyst
What is an element?
physical stuff of the universe; has mass and volume
pure substance made of two or more elements chemically combined
a substance that produces hydrogen (H+) ions in solution
pure substance of only one type of atom
What is energy?
process by which one substance (solute) is broken up into smaller pieces by another substance (solvent)
the ability to do work; the driver for physical and chemical processes necessary for life
a substance that can produce hydroxide ions (OH) or accept hydrogen (H+) ions in a solution
substance used to reduce the undesirable effects of a catalyst
What is temperature?
tendency of energy to disperse and become less available to do work
stored chemical energy that holds two atoms together
particles in a solution evenly distributed throughout a solvent
measure of average speed of particles within a substance
What is entropy?
change in a substance that results in one or more new substances being formed
process by which one substance (solute) is broken up into smaller pieces by another substance (solvent)
tendency of energy to disperse and become less available to do work
naturally occurring catalyst
What is physical change?
change in a substance that results in one or more new substances being formed
change in substance that does not change its identity
process by which one substance (solute) is broken up into smaller pieces by another substance (solvent)
uneven distribution of electrical charge in a molecule (asymmetrical areas of charge)
What is chemical change?
change in a substance that results in one or more new substances being formed
change in substance that does not change its identity
a process that produces hydrogen (H+) ions in solution
substances formed in a chemical reaction
What is a bond?
pure substance made of two or more elements chemically combined
particle in a solution evenly distributed throughout a solvent
stored chemical energy that holds two atoms together
organic compound made of carbon, hydrogen, oxygen
What is a compound?
a pure substance made of two or more elements chemically combined
organic molecule that acts as a building block for DNA and RNA
nonpolar molecule; used for energy storage and cell membranes
simple carbohydrates that are a source of both energy and structure
What is a molecule?
physical stuff of the universe; has mass and volume
smallest particle of a covalently bonded compound
building block of matter; smallest particle of an element
a substance that produces hydrogen (H+) ions in solution
What is dissolving?
uneven distribution of electrical charge in a molecule (asymmetrical areas of charge)
process by which two cells combine to form new cells
process by which one substance (solute) is broken up into smaller pieces by another substance (solvent)
process by which a cell is destroyed
What is acid?
a substance that produces hydrogen (H+) ions in solution
a substance that can produce hydroxide ions (OH) or accept hydrogen (H+) ions in a solution
covalently bonded compound containing carbon
nonpolar molecule; used for energy storage and cell membranes
What is a base?
a substance that produces hydrogen (H+) ions in solution
particles in a solution evenly distributed throughout a solvent
a substance that provides an alternate route from reactants to products that doesn't require as much energy to jump-start
a substance that can produce hydroxide ions (OH) or accept hydrogen (H+) ions in a solution
What is diffusion?
particles in a solution evenly distributed throughout a solvent by Brownian motion
process by which one substance (solute) is broken up into smaller pieces by another substance (solvent)
a substance that provides an alternate route from reactants to products that doesn't require as much energy to jump-start
attraction between like particles within a polar substance
What are reactants?
substances formed in a chemical reaction
substances present before a chemical reaction
substance used to reduce the undesirable effects of a catalyst
the attraction of particles in one substance for particles in another substance
What are products?
substances formed in a chemical reaction
substances present before a chemical reaction
simple carbohydrates that are a source of both energy and structure
organic compounds that serve as building blocks of proteins
What is a catalyst?
substance used to reduce the undesirable effects of an inhibitor
covalently bonded compound containing carbon
a substance that provides an alternate route from reactants to products that doesn't require as much energy to jump-start
nonpolar molecule; used for energy storage and cell membranes
What is an enzyme?
substance used to reduce the undesirable effects of a catalyst
organic compounds that serve as building blocks of proteins
smallest particle of a covalently bonded compound
a naturally occurring catalyst
What is an inhibitor?
naturally occurring catalyst
substance used to reduce the undesirable effects of a catalyst
a substance that provides an alternate route from reactants to products
substances formed in a chemical reaction
What is the definition of polar?
the attraction of particles in one substance for particles in another substance
tendency of energy to disperse and become less available to do work
the driver for physical and chemical processes necessary for life
uneven distribution of electrical charge in a molecule (asymmetrical areas of charge)
What is cohesion?
attraction between like particles within a polar substance
the attraction of particles in one substance for particles in another substance
process by which one substance (solute) is broken up into smaller pieces by another substance (solvent)
change in a substance that results in one or more new substances being formed
What is adhesion?
attraction between like particles within a polar substance
uneven distribution of electrical charge in a molecule (asymmetrical areas of charge)
the attraction of particles in one substance for particles in another substance
stored chemical energy that holds two atoms together
What is an organic compound?
building block of matter; smallest particle of an element
nonpolar molecule; used for energy storage and cell membranes
simple carbohydrate that is a source of both energy and structure
covalently bonded compound containing carbon
What is a carbohydrate?
organic molecule that acts as a building block for DNA and RNA
a source of both energy and structure
organic compound made of carbon, hydrogen, oxygen
organic compounds that serve as building blocks of proteins
What is sugar?
organic molecules that act as building blocks for DNA and RNA
simple carbohydrates that are a source of both energy and structure
nonpolar molecule; used for energy storage and cell membranes
naturally occurring catalyst
What is a lipid?
building block of matter; smallest particle of an element
pure substance of only one type of atom
organic compound made of carbon, hydrogen, oxygen
nonpolar molecule; used for energy storage and cell membranes
What is amino acid?
organic compounds that serve as building blocks of proteins
organic molecules that act as building blocks for DNA and RNA
simple carbohydrates that are a source of both energy and structure
a substance that produces hydrogen (H+) ions in solution
What is a nucleotide?
pure substance made of two or more elements chemically combined
smallest particle of a covalently bonded compound
organic molecules that act as building blocks for DNA and RNA
smallest particle of an element
