Biochemistry Questions and Answers
Rated A
Physical Property ✔✔Description of shape, mass, and volume
Chemical Property ✔✔A property used to characterize materials in reactions that change their
identity
Element ✔✔Any of over 100 substances that can not be separated to become simpler, and singly
or in combination make up all matter.
Atom ✔✔Smallest particle of an element that has the characteristics of that element.
Nucleus ✔✔The microscopic, positively charged central part of an atom made up of protons and
neutrons, also orbited by electrons.
Mixture ✔✔Combination of substances which individuals retain individual property.
Solution ✔✔Mixture of one or more solutes evenly distributed in a solvent.
, Solute ✔✔The substance evenly distributed in the solvent to form a mixture.
Solvent ✔✔Holds dissolved substance in a mixture; most of the time, it is water.
pH ✔✔Measure of how acidic or basic a solution is.
Acid ✔✔Describes a substance with a pH below 7.
Base ✔✔Describes a substance with pH above 7.
Polar Molecule ✔✔A molecule with a pair of equal and opposite charges.
Hydrogen Bond ✔✔Chemical bonding in which two molecules link together by one or more
hydrogen atoms.
Cohesion ✔✔The attraction of similar molecules.
Rated A
Physical Property ✔✔Description of shape, mass, and volume
Chemical Property ✔✔A property used to characterize materials in reactions that change their
identity
Element ✔✔Any of over 100 substances that can not be separated to become simpler, and singly
or in combination make up all matter.
Atom ✔✔Smallest particle of an element that has the characteristics of that element.
Nucleus ✔✔The microscopic, positively charged central part of an atom made up of protons and
neutrons, also orbited by electrons.
Mixture ✔✔Combination of substances which individuals retain individual property.
Solution ✔✔Mixture of one or more solutes evenly distributed in a solvent.
, Solute ✔✔The substance evenly distributed in the solvent to form a mixture.
Solvent ✔✔Holds dissolved substance in a mixture; most of the time, it is water.
pH ✔✔Measure of how acidic or basic a solution is.
Acid ✔✔Describes a substance with a pH below 7.
Base ✔✔Describes a substance with pH above 7.
Polar Molecule ✔✔A molecule with a pair of equal and opposite charges.
Hydrogen Bond ✔✔Chemical bonding in which two molecules link together by one or more
hydrogen atoms.
Cohesion ✔✔The attraction of similar molecules.
