Biochemistry Questions and Answers
100% Pass
Matter ✔✔Anything that has mass and/or takes up space (volume)
Element ✔✔A substance that cannot be broken down into other substances by chemical
reactions
Molecule ✔✔Any combination of atoms
Compound ✔✔Two or more different elements combined in a fixed ratio
Atom ✔✔Smallest unit of matter that retains the properties of an element
Atomic Number ✔✔Number of protons
Mass Number ✔✔Number of protons plus neutrons
, Atomic Weight ✔✔1 mole of a sustance = atomic weight in grams
Isotope ✔✔Atom with an abnormal number of neutrons
Proton ✔✔Positively charged subatomic particle
Neutron ✔✔Subatomic particle with no charge
Electron ✔✔Negatively charged subatomic particle
Valence Electron ✔✔Outermost electrons in an atom
Covalent Bond ✔✔Sharing of electrons (Two non-metals)
Ionic Bond ✔✔Electrostatic attraction of positive and negative ions (Metal and Non-metal)
Valence shell ✔✔An atom's outermost electron shell
100% Pass
Matter ✔✔Anything that has mass and/or takes up space (volume)
Element ✔✔A substance that cannot be broken down into other substances by chemical
reactions
Molecule ✔✔Any combination of atoms
Compound ✔✔Two or more different elements combined in a fixed ratio
Atom ✔✔Smallest unit of matter that retains the properties of an element
Atomic Number ✔✔Number of protons
Mass Number ✔✔Number of protons plus neutrons
, Atomic Weight ✔✔1 mole of a sustance = atomic weight in grams
Isotope ✔✔Atom with an abnormal number of neutrons
Proton ✔✔Positively charged subatomic particle
Neutron ✔✔Subatomic particle with no charge
Electron ✔✔Negatively charged subatomic particle
Valence Electron ✔✔Outermost electrons in an atom
Covalent Bond ✔✔Sharing of electrons (Two non-metals)
Ionic Bond ✔✔Electrostatic attraction of positive and negative ions (Metal and Non-metal)
Valence shell ✔✔An atom's outermost electron shell
