BISC 160 EXAM 1 CHAPTER 2 || 100% VALID SOLUTIONS.
Atomic number correct answers The number of protons in the nucleus of an atom
Atomic weight correct answers Average of the mass numbers of all isotopes
Atoms correct answers Building blocks of matter made of protons, electrons, and neutrons
Dalton (Da) correct answers A unit of mass equal to 1 atomic mass unit
Electron shell correct answers A grouping of electrons surrounding the nucleus of an atom
Element correct answers A pure substance made of only one kind of atom
Mass correct answers The amount of matter in an object
Mass number correct answers The sum of the number of neutrons and protons in an atomic
nucleus
Molecules correct answers Two or more atoms joined together
Neutrons correct answers The particles of the nucleus that have no charge
Orbital correct answers Clouds around nucleus that hold electrons
Periodic table correct answers An arrangement of elements in which the elements are separated
into groups based on a set of repeating properties such as atomic number, electron configuration,
and chemical properties
, Protons correct answers Positively charged subatomic particles
Radioactive decay correct answers Unstable atoms break down and transform into more stable
forms by emitting particles of energy
Radioisotopes correct answers Unstable isotopes of elements that undergo radioactive decay
Valance shell correct answers The outermost electron cloud determines radioactivity of an atom
Anions correct answers Gained extra electron and is negative
Cations correct answers Lost an electron and is positive
Chemical bonds correct answers Create molecules and compound to achieve stable electron
configuration
Compound correct answers Bonding of different elements to form unique substance with its own
properties
Covalent bond correct answers Atoms share electrons
Electronegativity correct answers Atoms desire to pull for electrons
Hydrocarbon molecules correct answers Bonds of hydrogen and carbon that are the building
blocks for many essential compounds
Hydrogen bonds correct answers Weak interactions between hydrogen atoms covalently bonded
to a highly electronegative atom and another highly electronegative atom
Atomic number correct answers The number of protons in the nucleus of an atom
Atomic weight correct answers Average of the mass numbers of all isotopes
Atoms correct answers Building blocks of matter made of protons, electrons, and neutrons
Dalton (Da) correct answers A unit of mass equal to 1 atomic mass unit
Electron shell correct answers A grouping of electrons surrounding the nucleus of an atom
Element correct answers A pure substance made of only one kind of atom
Mass correct answers The amount of matter in an object
Mass number correct answers The sum of the number of neutrons and protons in an atomic
nucleus
Molecules correct answers Two or more atoms joined together
Neutrons correct answers The particles of the nucleus that have no charge
Orbital correct answers Clouds around nucleus that hold electrons
Periodic table correct answers An arrangement of elements in which the elements are separated
into groups based on a set of repeating properties such as atomic number, electron configuration,
and chemical properties
, Protons correct answers Positively charged subatomic particles
Radioactive decay correct answers Unstable atoms break down and transform into more stable
forms by emitting particles of energy
Radioisotopes correct answers Unstable isotopes of elements that undergo radioactive decay
Valance shell correct answers The outermost electron cloud determines radioactivity of an atom
Anions correct answers Gained extra electron and is negative
Cations correct answers Lost an electron and is positive
Chemical bonds correct answers Create molecules and compound to achieve stable electron
configuration
Compound correct answers Bonding of different elements to form unique substance with its own
properties
Covalent bond correct answers Atoms share electrons
Electronegativity correct answers Atoms desire to pull for electrons
Hydrocarbon molecules correct answers Bonds of hydrogen and carbon that are the building
blocks for many essential compounds
Hydrogen bonds correct answers Weak interactions between hydrogen atoms covalently bonded
to a highly electronegative atom and another highly electronegative atom
