C165 must know Questions with Verified
Correct Answers
Ion
Charged atom. MEMORY: ION = charged atom.
Cation
Positive ion; formed when an atom loses electrons.
Anion
Negative ion; formed when an atom gains electrons.
Proton
Positive subatomic particle in the nucleus.
Neutron
Neutral subatomic particle in the nucleus.
Electron
Negative subatomic particle outside the nucleus.
Valence electrons
Electrons in the outermost energy level; involved in bonding.
Ionic bond
Electrons are transferred. MEMORY: IONIC = GIVE/TRANSFER.
Ionic compound
Usually a metal + one or more nonmetals joined by ionic bonding.
,Covalent bond
Atoms share valence electrons. MEMORY: COVALENT = SHARE.
Metallic bond
Metal atoms with freely moving valence electrons in an electron sea.
Metal + nonmetal
Usually ionic.
Nonmetal + nonmetal
Usually covalent.
Period
Horizontal row on the periodic table. MEMORY: PERIOD = ROW.
Group
Vertical column on the periodic table. MEMORY: GROUP = COLUMN.
Family
Elements in the same group with similar chemical properties.
Metals
Tend to lose electrons. MEMORY: METALS = LOSE.
Nonmetals
Tend to gain or share electrons and hold electrons tightly.
Metalloids
Have properties between metals and nonmetals. MEMORY: METALLOID = MIDDLE.
, Malleability
Ability to be hammered/shaped without breaking. MEMORY: HAMMER.
Ductility
Ability to be stretched or drawn into wire. MEMORY: WIRE.
Conservation of matter
Matter cannot be created or destroyed in ordinary physical or chemical changes.
Metal loses an electron
Becomes positively charged.
Nonmetal gains an electron
Becomes negatively charged.
Ionic clue words
Transfer, gain/loss of electrons, positive and negative ions.
Covalent clue words
Share, shared electrons.
Metallic clue words
Electron sea, electrons move freely, metals.
Group 1
1 valence electron.
Group 2
2 valence electrons.
Correct Answers
Ion
Charged atom. MEMORY: ION = charged atom.
Cation
Positive ion; formed when an atom loses electrons.
Anion
Negative ion; formed when an atom gains electrons.
Proton
Positive subatomic particle in the nucleus.
Neutron
Neutral subatomic particle in the nucleus.
Electron
Negative subatomic particle outside the nucleus.
Valence electrons
Electrons in the outermost energy level; involved in bonding.
Ionic bond
Electrons are transferred. MEMORY: IONIC = GIVE/TRANSFER.
Ionic compound
Usually a metal + one or more nonmetals joined by ionic bonding.
,Covalent bond
Atoms share valence electrons. MEMORY: COVALENT = SHARE.
Metallic bond
Metal atoms with freely moving valence electrons in an electron sea.
Metal + nonmetal
Usually ionic.
Nonmetal + nonmetal
Usually covalent.
Period
Horizontal row on the periodic table. MEMORY: PERIOD = ROW.
Group
Vertical column on the periodic table. MEMORY: GROUP = COLUMN.
Family
Elements in the same group with similar chemical properties.
Metals
Tend to lose electrons. MEMORY: METALS = LOSE.
Nonmetals
Tend to gain or share electrons and hold electrons tightly.
Metalloids
Have properties between metals and nonmetals. MEMORY: METALLOID = MIDDLE.
, Malleability
Ability to be hammered/shaped without breaking. MEMORY: HAMMER.
Ductility
Ability to be stretched or drawn into wire. MEMORY: WIRE.
Conservation of matter
Matter cannot be created or destroyed in ordinary physical or chemical changes.
Metal loses an electron
Becomes positively charged.
Nonmetal gains an electron
Becomes negatively charged.
Ionic clue words
Transfer, gain/loss of electrons, positive and negative ions.
Covalent clue words
Share, shared electrons.
Metallic clue words
Electron sea, electrons move freely, metals.
Group 1
1 valence electron.
Group 2
2 valence electrons.
